Glossary of military abbreviations

List of abbreviations, acronyms and initials related to military subjects such as modern armour, artillery, infantry, and weapons, along with their definitions.

A

 * A&TWF - Acquisition and Technology Work Force
 * a – Army
 * AA - Assembly Area
 * AA – anti-aircraft
 * AA – AEGIS Ashore
 * AAA - anti-aircraft artillery
 * AAA – anti-aircraft artillery "Triple A"
 * AAAV – Advanced Amphibious Assault Vehicle
 * AAC - Army Acquisition Corps
 * AAD – Armored Amphibious Dozer
 * AAE - Army Acquisition Executive
 * AADC – Area Air Defense Commander
 * AAG – Anti-Aircraft Gun
 * AAK – Appliqué armor kit (US)
 * AAL - Additional Authorization List
 * AAN – Army after next
 * AAP – Advance Authority to Procure
 * AAPC – advanced armoured personnel carrier (Turkiye)
 * AARADCOM – Army Armament Research and Development Command
 * AAR – After Action Review
 * AASLT - Air Assault
 * AAV – Amphibious assault vehicle
 * AAV – Assault Amphibious Vehicle
 * AAW – Anti-Aircraft Warfare
 * AAWC – Anti-Aircraft Warfare Coordinator
 * AB – Air burst
 * ABC – Atomic, biological, chemical (replaced by chemical, biological, radiological (CBR), and Nuclear, Biological, Chemical (NBC))
 * ABC – Automatic brightness control
 * ABCS - Automated Battlefield Control System
 * AB(C) – Aviation battalion (combat)
 * ABIT – Advanced Built-In Test
 * ABM – Air Bursting Munition
 * ABM – Anti-Ballistic Missile
 * ABMD – AEGIS Ballistic Missile Defense
 * ABMS – Air Bursting Ammunition System
 * ABN - Airborne
 * ABNSOTD - Airborne and Special Operations Test Directorate
 * ABRO – Army Base Repair Organization
 * ABS – Aww-Busting System
 * ABS – Anti-skid Braking System
 * ABSP – AEGIS Ballistic Missile Defense (BMD) Signal Processor
 * ABSV – Armoured Battlegroup Support Vehicle
 * ABU — Airman Battle Uniform
 * A/C – Aircraft Commander
 * AC – Alternating Current
 * ACA - ATEC Contracting Activity
 * ACA – Ammunition Container Assembly
 * ACADA' – Automatic Chemical Agent Detector and Alarm
 * ACAVP – Advanced Composite Armoured Vehicle Platform (UK)
 * ACB – Advanced Capability Build
 * ACB/TI – Advanced Capability Baseline/Technical Insertion
 * ACC - Army Contracting Command
 * ACC – AEGIS Computer Center
 * ACCE – Abrams/Crusader Common Engine
 * ACCV – Armored Cavalry Cannon Vehicle (US)
 * ACD – Automated Common Diagrams
 * ACE – Armored Combat Earthmover (US)
 * ACEGIO – Advanced Conversion Equipment Group Input Output
 * ACF - Acquisition Career Field
 * ACF:T - Acquisition Career Field: Test & Evaluation
 * ACH – Advanced Combat Helmet (MICH TC-2000 Combat Helmet)
 * ACIE - Army Clothing and Individual Equipment
 * ACLOS – Automatic Command to Line of Sight
 * ACM – Acoustic Countermeasures
 * ACOG – Advanced Combat Optical Gunsight
 * ACOMMS – Acoustic Communications
 * ACP – Automatic Colt Pistol
 * ACP – Alignment control Panel
 * ACPU – Aft Central Processing Unit
 * ACR – Advanced Combat Rifle
 * ACR – Armored cavalry regiment
 * ACRV – Armored Command and Reconnaissance Vehicle
 * ACS – Artillery Communications System
 * ACS – AEGIS Combat System
 * ACS – Air Control Supervisor
 * ACS - Anti-Collision System
 * ACSC' – AEGIS Combat Systems Center
 * ACTD - Advanced Concept Technology Demonstration
 * ACTEDS - Acquisition Career Training and Education Development System
 * ACTS – AEGIS Combat Training System
 * ACU – Army Combat Uniform
 * ACU – Antenna Coupler Unit
 * ACV – Aardvark Clearing Vehicle
 * ACV – Armored Combat Vehicle
 * ACVT – Armored Combat Vehicle Technology Program (US)
 * A/D – Analog to Digital
 * AD - Air Defense
 * ADA – Air Defense Artillery
 * ADACS - Automated Data Collection System
 * ADAM – Area Denial Artillery Munition
 * ADAMS – Air Defense Advanced Mobile System (US)
 * ADAP – Advanced Digital Antenna Production
 * ADAP - Army Designated Acquisition Programs
 * ADATD - Air Defense Artillery Test Directorate
 * ADATS – Air Defense Anti-Tank System
 * ADATS - Army Development and Acquisition of Threat Simulators
 * ADC-A – Assistant Division Commander – Fire and Maneuver
 * ADC-B – Assistant Division Commander – Combat Support
 * ADEA – Army Development and Employment Agency
 * ADF – Australian Defense Force
 * ADG' – Acoustic Display Generator
 * ADI – Australian Defense Industries
 * ADM – Advanced Development Model
 * ADM – Acquisition Decision Memorandum [US]
 * ADMAS - Advanced Distributed Modular Acquisition System
 * ADNS – Automated Digital Network System
 * ADP - Automated Data Processing
 * ADPE - Automated Data Processing Equipment
 * ADS – Advanced Display System
 * ADSS - ATEC Decision Support System
 * ADTD - Air Defense Test Directorate
 * AE – Action Express
 * AEC - Army Evaluation Center
 * AECU – Antenna Environmental Control Unit
 * AEF – Allied expeditionary force
 * AEP – Action Entry Panel
 * AER – Alteration Equivalent to Repair
 * AESA – Active electronically scanned array
 * AEWC – Airborne Early Warning and Control
 * AEV – Armored engineer vehicle
 * AF – Air Force
 * AF – And Following (as "in DDG-113 AF ships will receive the AMDR Radar")
 * AFB - Air Force Base
 * AFA/ARA – Aerial field artillery/aerial rocket artillery (US, Vietnam war era attack helicopter batteries employing 2.75 in. FFAR)
 * AFARV – Armored, Forward Area, Re-arm Vehicle (US)
 * AFAS – Advanced Field Artillery System
 * AFATDS – Advanced Field Artillery Tactical Data System
 * AFC – Australian Flying Corps
 * AFC - Army Futures Command
 * AFCS – Automatic Fire-Control Systems
 * AFD – Automatic Feeding Device
 * AFDL – Advanced Flight Deck Lighting
 * AFF - Active Fire-and-Forget
 * AFFLQ - Active Fire-and-Forget with Laser Cueing
 * AFFF – Aqueous Fire Fighting Foam (smothers fire cutting off oxygen)
 * AFOTEC - Air Force Operational Test and Evaluation Center
 * AFSC – Air Force Specialty Code
 * AFSS - Advanced Fire Support System
 * AFSV – Armored Fire Support Vehicle
 * AFTADS - Advanced Field Artillery Tactical Data System
 * AFV – Armored Family of Vehicles (US)
 * AFV – Armored Fighting Vehicle
 * AG - Assistant Gunner
 * AGC – Automatic Gain Control
 * AGF – Army Ground Forces
 * AGL – Above Ground Level
 * AGL – Automatic Grenade Launcher
 * AGLS – Automatic Gun Laying System
 * AGS – Armored Gun System (US)
 * AGS – Advanced Gun System
 * AGV – Assault Gun Vehicle
 * AGVT – Advanced Ground Vehicle Technology
 * Ah – Ampere hour
 * AHA - Ammunition Handling Area
 * AHC – Attack Helicopter Company (USA)
 * AHE – Aircraft Handling Equipment
 * AHS - Ammunition Handling System
 * AHU - Air Handling Unit
 * AI – Action Item
 * Ai - Area of interest
 * AIC – Air Intercept Controller (US Navy)
 * AICS – Accuracy International Chassis System
 * AICW – Advanced Individual Combat Weapon
 * AIF – Australian Imperial Force (Australia, WWI or WWII)
 * AIFS – Advanced Indirect Fire System
 * AIFV – Armored Infantry Fighting Vehicle
 * AIPS – Advanced Integrated Propulsion System (US)
 * AIS – Automatic Identification System (US NAVY)
 * AIS - Automated Information System
 * AIT – Alteration Installation Team
 * AIT – Advanced Information Technology
 * AIT - Advanced Individual Training
 * AITAS - ATRRS Internet Training Application System
 * AK – Acknowledgement
 * AKO - Army Knowledge Online
 * AL&T - Acquisition, Logistics, and Technology
 * ALAAVS – Advanced Light Armored/Amphibious Vehicle System (US)
 * ALC – Advanced Land Combat (US)
 * ALDT - Administrative and Logistics Down Time
 * ALICE – All-purpose Lightweight Individual Carrying Equipment
 * ALMC - U.S. Army Logistics Management College
 * ALO – AEGIS Light Off
 * ALS – Advanced Laying System
 * ALS – Advanced Lighting System (flight deck)
 * ALSV – Armored logistics support vehicle
 * ALT – Armored launching turret
 * ALWT – Advanced Lightweight Torpedo
 * AM – Acquisition Manager
 * AMBL - Air Maneuver Battle Lab
 * AMC – United States Army Materiel Command
 * AMCAC - United States Army Materiel Command Acquisition Center
 * AMC – Advanced Mortar Carrier (Turkey)
 * AMCCOM – Armament Munitions and Chemical Command
 * AMCOM - Aviation and Missile Command
 * AMDBD - Army Medical Department Board
 * AMEDD - Army Medical Department
 * AMEDDC&S - Army Medical Department Center & School
 * AMDR – Air and Missile Defense Radar
 * AMDS – Anti-Missile Discarding Sabot
 * AMF – Amphibische Mehrzweck-Fahrzeuge (multipurpose amphibious vehicle)
 * AML – Automitrailleuse Légère (light armored car)
 * AMLCD – Active-Matrix Liquid Crystal Display
 * AMN – Afghanistan Mission Network
 * AMOS – Advanced Mortar System
 * AMPS – Afloat Master Planning System (US NAVY)
 * AMPV - Armored Multi-Purpose Vehicle
 * AMR – Anti-materiel rifle
 * AMR – Automitrailleuse de Reconnaissance
 * AMRAAM - Advanced Medium Range Air-to-Air Missile
 * AMRDEC - Air and Missile Research, Development, and Engineering Center
 * AMRWS – Advanced Multi-Role Weapon Station
 * AMS – Armored Mortar System
 * AMSAA - Army Materiel Systems Analysis Activity
 * AMSEC - Army Modeling and Simulation Executive Council
 * AMS-H – Advanced Missile System – Heavy
 * AMSO - Army Modeling and Simulation Office
 * AMX – Atelier de Construction d'Issy-les-Moulineaux
 * ANAD – Anniston Army Depot
 * ANR - Active Noise Reduction
 * ANZAC – Australia and New Zealand Army Corps
 * ANZUS – Australia New Zealand United States Treaty
 * AO – Area of Operations
 * AoA - Add-on Armor
 * AOA - Avenue Of Approach
 * AOI – Arab Organization for Industrialization
 * AOP – Air observation post
 * AOS – Add-on stabilization
 * AOTR - Abbreviated Operational Test Report
 * AP – Anti-Personnel
 * AP – Armor-Piercing
 * APA - Army Procurement Appropriation
 * APAM – Anti-Personnel, Anti-Matériel
 * APBC – Armor-Piercing Ballistic Cap
 * APC – Army Personnel Centre
 * APC – Armored Personnel Carrier
 * APC – Armor-Piercing Capped
 * APCBC – Armor-Piercing Capped Ballistic Cap
 * APC-T – Armor-Piercing Capped – Tracer
 * APCT-BF – Armor-Piercing Capped Tracer – Base Fuse
 * APCNR – Armor-Piercing Composite Non-Rigid
 * APCR – Armor-Piercing Composite Rigid
 * APCRBC – Armor-Piercing Composite Rigid Ballistic Cap
 * APDS – Armor-Piercing Discarding Sabot
 * APDS-T – Armor-Piercing Discarding Sabot – Tracer
 * APE – Amphibisches Pionier-Erkundungsfahrzeug (amphibious front-line reconnaissance vehicle)
 * APEP – Armor-Piercing Enhancement Program
 * APERS – Anti-Personnel
 * APERS-T – Anti-Personnel Tracer
 * APFIDS – Armor-Piercing Fragmentation Incendiary Discarding Sabot
 * APFSDS – Armor-Piercing Fin-Stabilized Discarding Sabot
 * APFSDS-T – Armor-Piercing Fin-Stabilized Discarding Sabot – Tracer
 * APFSDS(P) – Armor-Piercing Fin-stabilized Discarding Sabot (Practice)
 * APFSDSDU – Armor-Piercing Fin-Stabilised Discarding Sabot, Depleted Uranium
 * APG – Aberdeen Proving Grounds
 * APGM – Autonomous Precision-Guided Munition
 * APHC – Armor-Piercing Hard Core
 * APHE – Armor-Piercing High-Explosive
 * API – Armor-Piercing Incendiary
 * API-T – Armor-Piercing Incendiary - Tracer
 * APM – Anti-Personnel Mine
 * APMI - Accelerated Precision Mortar Initiative
 * APOD - Aerial Port Of Debarkation
 * APS – Advanced Propulsion System
 * APS – Artillery Pointing System
 * APSE – Armor-Piercing Secondary Effect
 * APSE-T – Armor-Piercing Secondary Effect – Tracer
 * AP-T – Armor-Piercing - Tracer
 * APTE – Abrams Power Train Evolution (US)
 * APU – Auxiliary Power Unit
 * APV – Armored Patrol Vehicle
 * AR – ArmaLite rifle
 * AR – Assault Rifle
 * AR - Army Regulation
 * AR/AAV – Armored Reconnaissance/Airborne Assault Vehicle (US)
 * ARD – Anti-Reflective Device
 * ARDEC – Armament Research, Development and Engineering Center
 * ARDNOT – Automatic Day/Night Optical Tracker
 * ARE – Atelier de Construction Roanne
 * ARETS – Armor Remote Target System
 * ARFORGEN – Army Force Generation
 * ARL - Army Research Laboratory (US)
 * ARM – Anti-Radiation Missile
 * ARMAD – Armored and Mechanized Unit Air Defense
 * ARMD - Armored
 * ARMSCOR – Armament Manufacturing Corporation (South Africa)
 * ARMVAL – Anti-armor Vehicle Evaluation (US)
 * ARNG - Army National Guard
 * AROC - Army Requirements Oversight Council
 * ARP – Anti-Radiation Projectile
 * ARP – Armored Repair Plates
 * ARRADCOM – Armament Research and Development Command
 * ARRV – Armored Repair and Recovery Vehicle
 * ARSV – Armored Reconnaissance Scout Vehicle (US)
 * ART – Armored Recon Transport
 * ARV – Armored Recovery Vehicle or Armed Robotic Vehicle (XM1219)
 * ARTY - Artillery
 * ASA – Advanced security agency
 * ASAP – As soon as possible
 * ASARC – Army Systems Acquisition Review Council
 * ASCOD – Austrian Spanish Co-operative Development
 * ASE - Aircraft Survivability Equipment
 * ASI - Additional Skill Identifier
 * ASIP - Advanced System Improvement Program
 * ASM – Air-to-Surface Missile
 * ASP – Automatic, Self-Powered
 * ASP - Automation Support Plan
 * AST - ATEC System Team
 * ASTROS – Artillery Saturation Rocket System (Brazil)
 * ASV – Armored Security Vehicle (US)
 * ASV – Ammunition Supply Vehicle
 * ASV - Army Supply Vehicle
 * AYMWAR - Asymmetric Warfare
 * AT – Anti-Tank
 * AT – Ape Tape
 * AT&L - Acquisition, Technology, and Logistics
 * ATACMS - Army Tactical Missile System
 * ATACS – Advanced Tank Cannon System (US)
 * ATAS – Automatic Target Acquisition System
 * ATC - Aberdeen Test Center
 * ATCAS – Advanced Towed Cannon System
 * ATCCS - Army Tactical Command and Control System
 * ATD – Advanced Technology Demonstration
 * ATD – Advanced Technology Demonstrator (US)
 * ATD – Automatic Target Detection
 * ATDT – Automatic Target Detection and Tracking
 * ATDU – Armored Trials and Development Unit (UK)
 * ATE – Advanced Technology Engine
 * ATE - Automatic Test Equipment
 * ATEC - Army Test and Evaluation Command
 * ATFCS – Automated Targeting and Fire Control System
 * ATG – Anti-Tank Gun
 * ATGL – Anti-Tank Grenade Launcher
 * ATGM – Anti-Tank Guided Missile
 * ATGW – Anti-Tank Guided Weapon
 * ATIRS - Army Test Incident Reporting System
 * ATK – Alliant Techsystems
 * ATLAS – Advanced Technology Light Artillery System
 * ATLV – Artillery Target Location Vehicle
 * ATM – Anti-Tank Mine
 * ATO - Authorization To Operate
 * ATR EDS - Automotive Test Rig – Electric Drive System
 * ATS – Atelier de Construction de Tarbes
 * ATSA - ATEC Threat Support Activity
 * ATTC – All Terrain Tracked Carrier
 * ATTS – Air Transportable Towed System
 * ATTS - Automatic Target Tracking System
 * ATV – All-Terrain Vehicle
 * ATV – Armored TOW Vehicle (Turkey)
 * AUG – Armee Universal Gewehr
 * AVGP – Armored Vehicle General Purpose (Canada)
 * AVH – Armored Vehicle Heavy
 * AVL – Armored Vehicle Light
 * AVLB – Armored vehicle-launched bridge
 * AVM – Armored Vehicle Medium
 * AVR – Armored Vehicle Reconnaissance
 * AVRE – Armored Vehicle Royal Engineers (UK)
 * AVT – Advanced Vehicle Technologies (US)
 * AUDS - Anti-UAV Defense System
 * AUSA - Association of the U.S. Army
 * AUTL - Army Universal Task List
 * AV - Audio-Visual
 * AVN - Aviation
 * AVTD - Aviation Test Directorate
 * AWE – Advanced Warfighting Experiment
 * AWOL – Absent Without Official Leave
 * AWS - Alternative Work Schedule
 * AZ - Azimuth

B

 * BAe – British Aerospace
 * BAI – Battlefield Air interdiction
 * BAMCIS – Begin the Planning, Arrange Recon, Make Recon, Complete Planning, Issue Order, Supervise
 * BAR – M1918 Browning Automatic Rifle
 * BARCAP – Barrier Combat Air Patrol
 * BARF - Base And Range Facilities
 * BARV – Beach Armored Recovery Vehicle
 * BAS - Battlefield Automated System
 * BAS - Basic Allowance for Substance
 * BASE – British Aerospace Systems and Equipment
 * BASOPS - Base Operations
 * BATES – Battlefield Artillery Target Engagement System
 * BAT – Biometrics Automated Toolset
 * BAWS - Biological Agent Warning System
 * BB – Base Bleed
 * BB – Battleship
 * BBSP – Blowback Shifted Pulse
 * BC – Battery Commander or Battalion Commander
 * BC – Battlecruiser
 * BCC – Battery Control Centre
 * BCIS - Battlefield Combat Identification System
 * BCP – Battery Command Post
 * BCS - Bridge Crossing Simulator
 * BCT – Brigade Combat Team (US)
 * BCT – Basic Combat Training
 * BCV – Battle Command Vehicle
 * BD – Base Detonating
 * BDA – Browning Double Action or Bomb Damage Assessment
 * BDAR - Battle Damage Assessment And Repair
 * BDE - Brigade
 * BDM – Bunker Defeat Munition
 * BDU – Battle Dress Uniform
 * BE – Base Ejection
 * BFA – Blank-Airing Adaptor or Blank-Firing Attachment
 * BFV – Bradley Fighting Vehicle
 * BFVS - Bradley Fighting Vehicle System
 * BG – Border Guard or Brigadier General
 * BG - Bombardment Group
 * BH - Black Hot
 * BHOT - Black Hot (image in a thermal sight)
 * bhp – Brake Horsepower
 * BIFF – Battlefield Identification Friend or Foe
 * BII - Basic Issued Item
 * BILL – Bofors, infantry, light and lethal, referring to RBS 56 BILL or RBS 56B BILL 2
 * BIT - Built-In Test
 * BIT/ST - Built-In Test/Self-Test
 * BITE – Built-in test equipment
 * BL – Blank
 * BL-T – Black tracer
 * BLITS – Beta lighted infantry telescope system
 * BLOS - Beyond Line-Of-Sight
 * BL-T - Blank - Tracer
 * BLT – Battalion Landing Team
 * BLR – Blindado Ligero de Ruedas
 * BLRIP - Beyond Low-Rate Initial Production
 * BLWE - Battle Lab Warfighting Experiement
 * BM – Brigade Major
 * BMC4I - Battle Management Command, Control, Communications, Computers, and Intelligence
 * BMD - Ballisitic Missile Defense
 * BMF – Belgian Mechanical Fabrication
 * BML – Battle management language
 * BMNT – Begin Morning Nautical Twilight
 * BMP – Pronounced "bimp". Former Warsaw Pact IFVs including BMP-1, BMP-2, BMP-3, etc.
 * BMR – Blindado Medio de Ruedas
 * BMS – Battalion Mortar System
 * BMS – Battlefield Management System
 * BNCC (USAF) – Base network control center
 * BN - Battalion
 * BNS – BILL Night Sight
 * BO - Blackout
 * BOCV – Battery Operations Center vehicle
 * BOG-Dwell – Boots on the Ground – Dwell (down time)
 * BOI - Basis Of Issue
 * BOL – Bearing-only launch
 * BOLTS – Bolt-On Loading Tray System
 * BOIP - Basis Of Issue Plan
 * BOSS – Ballistic Optimizing Shooting System
 * BOSS - Better Opportunity for Single Soldiers
 * BPI - Bolt Position Indicator
 * BPS – Battery Power Source
 * BPT - Be Prepared To
 * BPS - Battery Power Source
 * BR – Battle Rifle
 * BRAC - Base Realignment And Closure
 * BRDEC - Belvoir Research and Development Engineering Center
 * BRKR - Breaker
 * BRS - Brake Release Switch
 * BRSGHT - Boresight
 * BRT - Bright or Brightness
 * BSA - Base Support Agreement
 * BSB – Brigade Support Battalion
 * BSD - Boresight Device
 * BSP – Bright Source Protection
 * BSSG – Brigade Service Support Group
 * BST – Basic Skills Trainer
 * BT – Boat Tail
 * BT – Bullet Trap
 * BTA – Best Technical Approach
 * BTA - Battle Training Area
 * BTRY – Battery
 * BTU – Bullet Trap Universal
 * BTU - British Thermal Unit
 * BTY - Battery
 * BUA – BILL Under Armor or Built-Up Area
 * BUB - Battlefield Update Briefing
 * BW – Biological Warfare
 * BW - Black/White
 * BX – Bionix AFV

C

 * C/G - Contractor or Government
 * C/J - Communications/Jam
 * C&L - Capabilities and Limitations
 * C2 – Command and Control
 * C2E - Continuous Comprehensive Evaluation
 * C2I - Command, Control, and Intelligence
 * C2V - Command and Control Vehicle
 * C3 - Command, Control, and Communications
 * C3I – Command, Control, Communications, and Intelligence
 * C4 – Composition C-4
 * C4I - Command Control, Communications, Computers, Intelligence
 * C4IEWS - Command, Control, Communications, Computer, Intelligence, Electronic Warfare and Sensors
 * C4ISR - Command, Control, Communications, Computer, Intelligence, Surveillance, and Reconnaissance
 * C4ISTAR – Command, Control, Communications, Computers, Intelligence, Surveillance, Target acquisition, And Reconnaissance
 * C5I – Command, Control, Communications, Computers, Collaboration and Intelligence
 * C6ISR – Command, Control, Communications, Computers, Cyber-defense, Combat systems and intelligence, Surveillance, and Reconnaissance
 * CA - Certification Authority
 * CAA - Center for Army Analysis
 * CAB – Combat Aviation Battalion
 * CAB – Combat Action Badge
 * CAC - Common Access Card
 * CACDA - Combined Arms Combat Development (US Army)
 * CAD – Computer-Assisted Design
 * CAD - Chemical Agent Detector
 * CAE - Component Acquisition Executive
 * CAG – Commander Air Group
 * CAGEC - Commercial And Government Entity Code
 * CAIV - Cost As an Independent Variable
 * CAL – Canadian Arsenals Limited
 * CAL - Caliber
 * CALIB - Calibration
 * CAN - Control Area Network
 * CAP - Crisis Action Planning
 * CAP – Civil Air Patrol (USAF civilian auxiliary)
 * CAP – Combat Air Patrol
 * CAP – Combustible Augmented Plasma
 * CAP – Covering Agent Program
 * CAR - Corrective Action Report
 * CAR - Combined Arms Rehearsal
 * CARRV – Challenger Armored Repair and Recovery Vehicle
 * CART - Corrective Action Review Team
 * CAS – Close Air Support
 * CASEVAC – Casualty Evacuation
 * CASTFOREM - Combined Arms Task Force Evaluation Model
 * CAT/FCS – Command Adjusted Trajectory/Fire-Control System (US)
 * CAT/LCV – Combined Arms Team/Lightweight Combat Vehicle (US)
 * CATK - Counter Attack
 * CATT – Combined Arms Tactical Trainer (UK)
 * CATT-B – Component Advanced Technology TestBed (US)
 * CAV - Cavalry
 * CAV – Composite Armored Vehicle (US)
 * CAWS – Cannon Artillery Weapons Systems (US)
 * CAX – Combined Arms Exercise
 * CB – Heavy Cruiser
 * CBIT - Continuous Built-In Test (BIT)
 * CBMS - Chemical Biological Mass Spectrometer
 * CPDP - Chemical, Biological Defense Program
 * CBR – Chemical, Biological, Radiological
 * CBRNE – Chemical, Biological, Radiological, Nuclear, Explosive
 * CBS - Corps Battle Simulator
 * CBT - Computer Based Training
 * CBTDEV - Combat Developer
 * CBW - Chemical and Biological Warfare
 * CC - Close Combat
 * CCAWS - Close Combat Anti-Armor Weapons Systems
 * CCB - Configuration Control Board
 * CCC – Combustible Cartridge Case
 * CCD – Charge-Coupled Device
 * CCMA - Crew-Correctable Maintenance Action
 * CCMD - Crew-Correctable Maintenance Action
 * CCIP – Constantly Computed Impact Point
 * CCO – Close Combat Optic
 * CCP – Casualty Collection Point
 * CCP – Computer Control Panel
 * CCR – Crown Copyright Reserved
 * CCTV – Closed-Circuit Television
 * CCU – Central Control Unit
 * CCU - Climate Control Unit
 * CCV – Close Combat Vehicle
 * CCV – Command and Control Vehicle (US)
 * CCV-L – Close Combat Vehicle – Light
 * cd – Candela
 * CDA – Combat Defensive Action
 * CDD - Capability Development Document
 * CDM – Coastal Defense Missile
 * CDR - Commander
 * CDR - Critical Design Review
 * CDRL - Contract Data Requirements List
 * CDRT - Capabilities Development for Rapid Transition
 * CDS - Configuration Data Set
 * CDU – Command Display Unit
 * CDU – Computer Display Unit
 * CE – Chemical Energy
 * CE - Continuous Evaluation
 * C/E – Crew/Enlisted (enlisted aircrew member)
 * CEAC - Cost and Economic Analysis Center
 * CECOM - Communications and Electronics Command
 * CECOM – Communications-Electronics Command
 * CED - Contingency Exercise Deployment
 * CEFO – Combat Equipment Fighting Order (webbing contents)
 * CENTCOM – Central Command
 * CENTO – Central Treaty Organization or Baghdad Pact
 * CEOI – Communications electronics operating instruction
 * CEP – Circular error probable
 * CEPSARC - Concept Experimentation Program Schedule and Review Committee
 * CERDEC - Communication and Electronics Research, Development, and Engineering Center
 * CERTEX - Certification Exercise
 * CES – Engineer Services Regiment (Sri Lanka)
 * CEPP – Controlled effect police projectile
 * CET – Combat engineer tractor
 * CEU – Computer electronics unit
 * CEV – Combat engineer vehicle
 * CF – Canadian Forces
 * CF - Controlled Fragmentation
 * CF – Controlled fragmentation
 * CFE – Conventional forces Europe
 * CFLCC - Coalition Forces Land Component Command
 * CFT - Cross Functional Teams
 * CFV – Cavalry Fighting Vehicle (US)
 * CG – Commanding General
 * CGS – Crew Gunnery Simulator
 * CGS - Command and General Staff
 * CHA – Cast Homogeneous Armor
 * CHARM – Challenger Chieftain Armament
 * CHEM - Chemical
 * CHIP – Challenger Improvement Program
 * CHS - Commander's Hand Station
 * CI - Counter-Intelligence
 * CI - Commander's Interface
 * CIC – Combat Information Centre
 * CIE - Clothing and Individual Equipment
 * CIFV – Composite Infantry Fighting Vehicle
 * CIG - Cannon Interface Gear
 * CILAS – Compagnie Industrielle des Lasers
 * CINC – Commander In-Chief
 * CINCAFCOM - Commander-In-Chief, African Command
 * CINCCENTCOM - Commander-In-Chief, Central Command
 * CINCAD - Commander-In-Chief, Aerospace Defense Command
 * CINCAL - Commander-In-Chief, Alaska
 * CINCCFC - Commander-In-Chief, Combined Forces Command
 * CINCEUR - Commander-In-Chief, Europe
 * CINCHAN - Commander-In-Chief, Channel (NATO)
 * CINCLANT - Commander-In-Chief, Atlantic
 * CINCLANTFLT - Commander-In-Chief, Atlantic Fleet
 * CINCMAC - Commander-In-Chief, Military Airlift Command
 * CINCNET - Commander-In-Chief, Network
 * CINCNORAD - Commander-In-Chief, North American Aerospace Defense Command
 * CINCNORTH - Commander-In-Chief, Pacific
 * CINCRED - Commander-In-Chief, Readiness Command
 * CINCSOUTH - Commander-In-Chief, Southern Command
 * CINCSTRIKE - Commander-In-Chief, Strike Command
 * CINCUNC - Commander-In-Chief, United Nations Command
 * CINCUNK - Commander-In-Chief, United Nations Force, Korea
 * CINCUSAFE - Commander-In-Chief, U.S. Air Forces, Europe
 * CINCUSAREUR - Commander-In-Chief, Army, Europe
 * CINCUSNAVEUR - Commander-In-Chief, U.S. Naval Forces, Europe
 * CIO - Chief Information Officer
 * CIP – Combat Identification Panel
 * CIPR - Concept In-Process Review
 * CIS – Chartered Industries of Singapore
 * CIS – Commonwealth of Independent States
 * CITV – Commander's Independent Thermal Viewer (US)
 * CIU - Commanders Interface Unit
 * CIWS – Close-In Weapons System
 * CIV - Civilian
 * CJCS - Chairman, Joint Chiefs of Staff
 * CJCSI - Chairman of the Joint Chiefs of Staff Instruction
 * CJCSM - Chairman of the Joint Chiefs of Staff Manual
 * CJTF - Commander, Joint Task Force
 * CKPT - Cockpit
 * CL – Light Cruiser
 * CLAMS – Clear Lane Marking System (US)
 * CLASS – Computerized Laser Sight System
 * CLAWS – Close Combat Light Armor Weapon System (US)
 * CLAWS - Container Launched Attack Weapon System
 * CLM-E - Continuous Learning Modules - Engineering
 * CLGP – Cannon-Launched Guided Projectile (US)
 * CLOE - Common Logistics Operating Environment
 * CLOS – Command to Line Of Sight
 * CLS - Combat Life Support
 * CLS - Contract Logistics Support
 * CLU – Command Launch Unit (as used in FGM-148 Javelin)
 * CM - Counter Measures
 * CMD - Command
 * CM – Color-Marking or "continue mission"
 * CMP - Configuration Management Plan
 * CMV - Combat Mobility Vehicle
 * CMS – Common Missile System
 * CMS – Compact Modular Sight
 * CMT – Cadmium–Mercury Telluride
 * CMV – Combat Mobility Vehicle (US)
 * CNCE - Communications Network Control Element
 * CNP - Candidate Nomination Proposals
 * CNVD – Clip-on Night Vision Device
 * COA – Course Of Action
 * COB – Close of Business
 * CO – Commanding officer
 * Co - Company
 * COA - Course of Action
 * COB - Close of Business
 * COC - Chain of Command
 * COCOM - Combatant Commander
 * COE - Chief of Engineers
 * COG – Course Over Ground
 * COI - Critical Operational Issue
 * COIC - Critical Operational Issues and Criteria
 * COIN – Counterinsurgency
 * COM/INT - Communications/Intercept
 * COMARLANT - Commander, U.S. Army Forces, Atlantic
 * COMDCAEUR - Commander, Defense Communications Agency, Europe
 * COMINT - Communications Jamming
 * COMJTF - Commander, Joint Task Force
 * COMOPTEVFOR - Commander, Operational Test and Evaluation Force
 * COMSAT - Communications Satellite
 * COMSEC- Communications Security
 * COMVAT – Combat Vehicles Armament Technology (US)
 * COMZ – Communications Zone
 * CONOPS - Concept of Operations
 * CONUS - Continental United States
 * COP – Combat Outpost
 * COS – Chief of Section
 * CoS - Chief of Staff
 * COSCOM – Corps Support Command (US Army)
 * CofS – Chief of Staff
 * COTAC – Conduite de Tir Automatique pour Char (tank automatic fire)
 * COTS – Commercial-Off-The-Shelf
 * COV – Counter Obstacle Vehicle (US)
 * CP – Command Post
 * CP – Concrete-Piercing
 * CPD - Capability Production Document
 * CPDU - Computer Power Distribution Unit
 * CPL - Corporal
 * CPO - Civilian Personnel Office
 * CPOC - Civilian Personnel Operations Center
 * CPR – Common Practice Round
 * CPS – Cardinal Points Specification (UK)
 * CPV – Command Post Vehicle
 * CPV - Commander's Panoramic Viewer
 * CPVEU - Commander's Panoramic Viewer Electronics Unit
 * CPVSA - Commander's Panoramic Viewer Sensor Assembly
 * CPX - Command Post Exercise
 * CQB – Close Quarters Battle
 * CQBR – Close-Quarters Battle Receiver
 * CR – Capability Requirement
 * CR – Sri Lanka Army Commando Regiment
 * CRB - Configuration Review Board
 * CRB - Capstone Requirements Document
 * C-RDAP - Civilian - Rotational Developmental Assignment Program
 * CRISAT – Collaborative Research into Small Arms Technology
 * CRM – Composite Risk Management (US)
 * CRMP - Computer Resource Management Plan
 * CROWS – Common Remotely Operated Weapon Station
 * CRR – Carro de Reconhecimento Sobre Rodas (reconnaissance tracking scout car)
 * CRT – Cathode Ray Tube
 * CRTC - Cold Regions Test Center
 * CRWG - Computer Resources Working Group
 * CRU – Cable Reel Unit
 * CS – Communications Subsystem
 * CS – Confined Space
 * CS – Communications Squadron (USAF)
 * CSA - Chief of Staff (Army)
 * CSAD - Commander's Situational Awareness Display
 * CSC - Computer Software Concept
 * CSCI - Computer Software Configuration Item
 * CSB – Combat Support Boat
 * CSE - Chargeable to Support Equipment
 * CSF – Combined Service Forces
 * CSI – computer-Synthesized Image
 * CSM - Command Sergeant Major
 * CSS - Combat Service Support
 * CSSBL - Combat Service Support Battle Lab
 * CSS – Computer Sighting System
 * CSSD – Combat Service Support Detachment
 * CT - Customer Test
 * CTA – Case Telescoped Ammunition
 * CTD – Concept Technology Demonstrator
 * CTC - Combat Training Center
 * CTEA - Cost and Training Effectiveness Analysis
 * CTEIP - Central Test and Evaluation Improvement Program
 * CTG - Cartridge
 * CTI – Central Tire Inflation
 * CTIS – Central Tire Inflation System
 * CTO – Central Treaty Organization or Baghdad Pact
 * CTP - Critical Technical Parameter
 * CTSF - Central Technical Support Facility
 * CTR – Close Target Recce
 * CTR - Contractor
 * CTRA – Carro de Transporte Sobre Rodas Anfibo (amphibious tracking scout car)
 * CTT – Challenger Training Tank
 * CUOPS – Current Operations
 * CUP - Control Unit Panel
 * CV - Commander's Vehicle
 * CV – Aircraft Carrier
 * CV90 – Combat Vehicle 90
 * CVAST – Combat Vehicle Armament System Technology (US)
 * CVC - Combat Vehicle Crewman's
 * CVR(T) – Combat Vehicle Reconnaissance (Tracked) (UK)
 * CVR(W) – Combat Vehicle Reconnaissance (Wheeled) (UK)
 * CVRDE – Combat Vehicle Research and Development Establishment (India)
 * CVT – Controlled Variable Time
 * CVTTS – Combat Vehicle Targeting System
 * CW – Chemical Warfare
 * CWA - Chemical Warfare Agent
 * CWBS - Contract Work Breakdown Structure
 * CWG - Communications Working Group
 * CWO - Chief Warrant Officer
 * CWR – Continuous Wave radar
 * CWS – Cupola Weapon Station
 * CY - Calender Year

D

 * D&O - Doctrinal and Organizational
 * DA - Department of the Army
 * DA – Double Action
 * DAA - Designated Approving Authority
 * DAB - Defense Acquisition Board
 * DAC - DEFCOM Analysis Cover
 * DAE - Defense Acquisition Executive
 * DAES - Defense Acquisition Evaluations System
 * DAG - Data Authentication Group
 * DAGR - Defense Advanced GPS Receiver
 * DAHA – Dual-Axis Head Assembly
 * DAIG - Department of the Army Inspector General
 * DA IPR - DA In-Process Review
 * DAO – Double Action Only
 * DAP - Designated Acquisition Program
 * DAP - Distant Aiming Point
 * DAPS - Dismounted Assured P(osition, Navigation, Timing,) System
 * DARCOM – US Army Matériel Development and Readiness Command
 * DAREOD – Damaged Airfield Reconnaissance Explosive Ordnance Disposal
 * DARPA – Defense Advanced Research Projects Agency (US)
 * DARPANET - DARPA Network
 * DAS – Deep Air Support
 * DAS Director of the Army Staff
 * DAS – Defensive Aids System/suite
 * DASP – Demountable Artillery Surveillance Pod
 * DATO - Denial Authority To Operate
 * DAU - Defense Acquisition University
 * DAWIA - Defense Acquisition Workforce Improvement Act
 * DB - Database
 * DB – Delayed-Blowback
 * DBBL - Dismounted Battle Battle Lab
 * DC - Data Collector
 * DC – Direct Current
 * DCA - Digital Control Assembly
 * DCA – Défense Contre Avions (anti-aircraft)
 * DCAS - Defense Contract Administration Services
 * DCB - Driver's Control Box
 * DCCT – Dismounted Close Combat Trainer
 * DCD - Directorate of Combat Developments
 * DCG - Deputy Commanding General
 * DCMA - Defense Contract Management Agency
 * DCR - DOTMLPF Change Recommendation
 * DCS - Diagnostic Control Software
 * DD - Drivers Display
 * DD – Detroit Diesel
 * DD – Destroyer
 * DDA – Detroit Diesel Allison
 * DDS – Department of Defense Support
 * DDU – Digital Display Unit
 * DE - Data Element
 * DEAD – Destruction of Enemy Air Defense
 * DECA – Digital Electronic Control Assembly
 * DEFA – direction des études et fabrications d'armement
 * DEFCON – Defense Readiness Condition
 * DEM/VAL - Demonstration and Validation (phase)
 * DEP - Deputy
 * DEPSECDEF - Deputy Secretary of Defense
 * DERA – Defence Evaluation and Research Agency (UK)
 * DESO – Defense Export Sales Organization (UK)
 * DET - Detachment
 * DEV - Developer
 * DFAC – Dining Facility (US)
 * DFCS – Digital Fire-Control System
 * DFSV – Direct Fire Support Vehicle
 * DFV – Desert Fighting Vehicle
 * DDG – Guided Missile Destroyer
 * DG – Door Gunner (Helicopter)
 * DHA - Display Head Assembly
 * DHSS – Data Handling Subsystem
 * DIA – Defense Intelligence Agency (US)
 * DIACAP - Department of Defense Information Assurance Certification and Accreditation Process
 * DIAG - Diagnostic
 * DICON – Defense Industries Corporation of Nigeria
 * DID - Data Item Description
 * DIMM - Dimmer
 * DIP – Driver Instrument Panel
 * DIPR - Detailed Test Plan in-Process Review
 * DIR - Director
 * DIS - Distributed Interactive Simulation
 * DISA – Defense Information Systems Agency
 * DISCOM – Division Support Command
 * DISNET - Defense Integrated Secure Network
 * DISUM - Daily Intelligence Summary
 * DIVARTY – Division Artillery
 * DLA - Defense Logistics Agency
 * DMC – Digital Magnetic Compass
 * DMR – Designated marksman rifle
 * DMR - Detect, Mitigate, Recover
 * DMSO - Defense Modeling and Simulation Office
 * DMU – Distance Measurement Unit
 * DN - Data Net
 * DNRS – day/night range sight
 * DoD – Department of Defense (US)
 * DODD - Department of Defense Directive
 * DODI - Department of Defense Instruction
 * DODIG - Department of Defense Inspector General
 * DOD-STD - Department of Defense Standard
 * DOE - Design of Experiments
 * DOIM – Directorate of Information Management (US Army)
 * DOP – Department of Productivity
 * DOS - Date of Separation
 * DOT&E - Director, Operational Test and Evaluation
 * DOTMLPF - Doctrine, Organization, Training, Materiel, Leadership and Education, Personnel and Facilities
 * DOTSP - Doctrinal and Organizational Test Support Package
 * DP - Data Processing
 * DP – demonstration purpose
 * DP – dual purpose
 * DPA – Defence Procurement Agency (UK)
 * DPE - Data Processing Equipment (or Element)4
 * DPEO - Deputy Program Executive Officer
 * DPG - Defense Planning Guidance
 * DPM - Deputy Program Manager
 * DPM - Deputy Project Manager
 * DPM - Deputy Product Manager
 * DPICM – Dual-Purpose Improved Conventional Munition (US)
 * DPTR – diopter
 * DPW - Directorate of Public Works
 * DQT - Development Qualification Testing
 * DR - Data Requirement
 * DR - Decision Review
 * DRA – Defence Research Agency (UK)
 * DRB - Design Review Board
 * DRI - Detection, Recognition, & Identification
 * DRM - Director of Resource Management
 * DROPS – demountable rack offloading and pick-up system
 * DROS – Date of Return Overseas (US)
 * DRP - Data Reduction Plan
 * DRT - Design Review Team
 * DS - Direct Support
 * DS/GS - Direct Support/General Support
 * DS/T – practice discarding sabot/tracer
 * DSA - Defense Supply Agency
 * DSACS – direct support armored cannon system (US)
 * DSAD - Driver's Situational Awareness Display
 * DSAU - Diagnostic Signal Acquisition Unit
 * DSETS – direct support electrical test system
 * DSM - Data Source Matrix
 * DSMC - Defense Systems Management College
 * DSN - Defense Switched Network
 * DSNET - Defense Secure Network
 * DSO – Defence Sales Organisation
 * DSRV – Deep Submergence Rescue Vehicle (US)
 * DSS - Direct Support System
 * DSSW - Defense Services Support - Washington
 * DST - Direct Support Team
 * DSWS – Division Support Weapon System
 * DT - Developmental Test
 * DT&E - Developmental Test and Evaluation
 * DTAT – Direction Technique des Armements Terrestres
 * DTC - Developmental Test Command
 * DTG - Date Time Group
 * DTIC - Defense Technical information Center
 * DTIP - Developmental Test Instrumentation Program
 * DTP - Detailed Test Plan
 * DTRR - Developmental Test Readiness Review
 * DTT - Doctrinal and Tactical Training
 * DTT – driver training tank
 * DTV - Driver's Thermal Viewer
 * DU - Display Unit / Detector Unit
 * DU – depleted uranium
 * DUA TST - Directory User Agent Tactical Support Team
 * DUSA - Deputy Under Secretary of the Army
 * DUSA-TE - Deputy Under Secretary of the Army for Test Evaluation
 * DUSD - Deputy Under Secretary of Defense
 * DUSD(ATL) - Deputy Under Secretary of Defense for Acquisition, Technology, and Logistics
 * DV – demining vehicle
 * DVC - Day Video Camera
 * DVE – driver's vision enhancer
 * DVO - Direct Vision Optics
 * DVO - Driver, Vehicle, and Operator (drop zone)
 * DWFK – deep water fording kit
 * DZ – drop zone

E

 * EAAK – Enhanced Appliqué Armor Kit (US)
 * EAC – Enhanced Attitude Control (warthog A10)
 * EAS – End of Active Service
 * EAOS – Enhanced Artillery Observation System
 * EBG – Engin Blindé Génie (armoured combat vehicle)
 * EBR – Engin Blindé de Reconnaissance (armoured reconnaissance vehicle)
 * EBRC – Engine Blindé à roues de Contact
 * EC – Enhanced Carbine
 * ECB – Engineering and Construction Bulletins
 * ECM – Electronic countermeasures
 * ECOS – Enhanced Combat Optical Sight
 * ECS – Environmental Control Subsystem
 * ECV – Enhanced Capacity Vehicle
 * EDD – Explosive Detonation Disruption
 * EDS – Electric Drive System
 *  – Etablissement d'Etudes et de Fabrications d'Armement de Bourges
 * EFC – equivalent full charge
 * EFCR – equivalent full charge rounds
 * EFM – Explosives Factory Maribyrnong
 * EFP – Expanded Feasibility Phase
 * EFP – Explosively Formed Penetrator
 * EFV – Expeditionary Fighting Vehicle (New name for AAAV)
 * EFVS – Electronic Fighting Vehicle System (US)
 * EG – External Gun
 * EGLM – Enhanced Grenade Launcher Module
 * EI – Engineering and Installation
 * EIS – Engineering and Installation Squadron
 * EI SIT – Engineering and Installation Site Implementation Team
 * ELB – Extended Life Barrel
 * ELEC – Electrical, Electric
 * ELEK – Electronic
 * ELEX – Electronics
 * ELKE – Elevated Kinetic Energy Weapon (US)
 * ELSAP – Elektronische Schiessanlage für Panzer (electronic fire system for tanks)
 * EM – electromagnetic
 * EMALS – Electromagnetic Aircraft Launcher System
 * EMC – Executive Management Committee
 * EMD – Engineering and Manufacturing Development
 * EMDG – Euromissile Dynamics Group
 * EMEW – Electromagnet Explosive Warhead
 * EMG – externally mounted gun
 * EMP – electromagnetic pulse
 * EMPG – Electromagnetic Pulse Grenade
 * ENGESA – Engesa Engenheiros Especializados (Brazil)
 * EOC – Essential Operational Capability
 * EOD – Explosive Ordnance Disposal
 * EOR – Explosive Ordnance Reconnaissance
 * EOTS – Electro-Optical Targeting System
 * EOW – End of Watch
 * EPC – Electronic plane conversion
 * EPC – Engin Principal de Combat (future main battle tank)
 * EPG – Enhanced Performance Grenade
 * EPG – European Production Group
 * EPG – European Programme Group
 * EPS – Electrical Power Subsystem
 * EPU – Electronics Processing Unit
 * ER – enhanced radiation
 * ER – extended range
 * ERA – explosive reactive armour
 * ERA – extended range ammunition
 * ERC – Engin de Reconnaissance Canon
 * ERFB – extended range full-bore
 * ERFB-BB – extended range full-bore – base bleed
 * ERGFCDS – Extended Range Gunnery Fire-Control Demonstration System
 * ERGP – extended range guided projectile
 * ERMIS – Extended Range Modification Integration System
 * ERP – Extended Range Projectile
 * ERSC – extended range subcalibre
 * ERV – emergency rescue vehicle
 * ERV – Engineer Reconnaissance Vehicle
 * ES – Extreme Spread
 * ESAF – Electronic Safety and Arm Function
 * ESD – Electronique Serge Dassault
 * ESLDE – Eyesafe Laser Daylight Elbow
 * ESPAWS – Enhanced Self-Propelled Artillery Weapon System (US)
 * ESRS – electro-slag refined steel
 * ETA – Estimated Time of Arrival
 * ETC – ElectroThermal Cannon
 * ETD – Estimated Time of Departure
 * ETE – Estimated Time of Endurance
 * ETM – Electronic Technical Manuals
 * ETS – Elevated TOW System
 * ETS – Engineer Tank System
 * ETS – End of Term of Service (discharge date) (US)
 * EW – electronic warfare
 * EWK – Eisenwerke Kaiserslautern Gцppner
 * EWS – external weapon station

F

 * FAAD – Forward Area Air Defense
 * FAAR – AN/MPQ-49 Forward Area Alerting Radar
 * FAARP – Forward Area Arming & Refueling Point
 * FAASV – Field Artillery Ammunition Support Vehicle (US)
 * FAC – Forward Air Control(er)
 * FAC-A – Forward Air Control(er)-Airborne
 * FACE – Field Artillery Computer Equipment
 * FAL – Fusil Automatique Légère
 * FAPDS – Frangible Armour-Piercing Discarding Sabot
 * FARP – Forward Area Refueling Point
 * FARS – field artillery rocket system
 * FARV-A – Future Armored Resupply Vehicle – Artillery (US)
 * FAST – Forward Area Support Team or Future Assault Shell Technology
 * FAV – Fast Attack Vehicle (US)
 * FBI – Federal Bureau of Investigation
 * FBM – Fleet Ballistic Missile
 * FBRV – Future Beach Recovery Vehicle (UK)
 * FCC – Fire Command Centre
 * FCC – Fire-Control Computer
 * FCCVS – Future Close-Combat Vehicle System (US)
 * FCE – fire-control equipment
 * FCLV – Future Command and Liaison Vehicle (UK)
 * FCS – fire-control system/subsystem
 * FCS – Future Combat System
 * FCU – Fire Control Unit
 * FDC – fire direction centre
 * FDCV – fire direction centre vehicle
 * FDSWS – Future Direct Support Weapon System
 * FEBA – Forward Edge of the Battle Area
 * FEP – Firepower Enhancement Programme
 * FET – Future Engineer Tank
 * FFAR – Folding-Fin Aerial Rocket
 * FFE – Fire for Effect
 * FFR – Fitted For Radio
 * FFSS – Future Fighting Soldier System
 * FFW – Fitted For Wireless
 * FG – field gun
 * FH – field howitzer
 * FIBUA – Fighting In Built-Up Areas
 * FID – Foreign Internal Defense
 * FIFV – Future Infantry Fighting Vehicle (US)
 * FIRM – Floating Integrated Rail Mount
 * FIS – Fuze Interface System
 * FISH – Fighting In Someone's House (UK) (Colloquial. Slang term for FIBUA)
 * FIST – Future Integrated Soldier Technology (UK), Fire Support Team (US)
 * FISTV – Fire Support Team Vehicle (US)
 * FITOW – Further Improved TOW (US)
 * FLEA – Frangible Low-Energy Ammunition (i.e. a fragmentation grenade or a low-yield IED)
 * FLIR – forward-looking infra-red
 * FLOT – forward line of own troops
 * FLSW – Future Light Support Weapon
 * FM – U.S. Army Field Manuals
 * FM – Titanium tetrachloride (code designation)
 * FMBS – Family of Muzzle Brake/Suppressors
 * FMC – Food Machinery Corporation
 * FMF – Fleet Marine Force
 * FMJ – Full Metal Jacket
 * FMJBT – Full Metal Jacket Boat Tail
 * FMJLF – Full Metal Jacket Lead Free
 * FMN – Federated Mission Networking
 * FMPDS – Frangible Missile Piercing Discarding Sabot
 * FMS – Foreign Military Sales
 * FMTV – Family of Medium Tactical Vehicles
 * FN – Fabrique Nationale (Manufacturer)
 * FNG – Fucking New Guy
 * FO – Forward Observer
 * FOB – Forward Operating Base
 * FOC – Full Operational Capability
 * FOD – Foreign Object Damage (i.e., damage not caused by enemy fire. Includes bugs, dirt, etc.) (Aviation)
 * FOG – Fibre Optic Gyro
 * FOM – Fibre Optic Missile
 * FOO – forward observation officer
 * FORTIS – Forward Observation and Reconnaissance Thermal Imaging System
 * FOTT – Follow on to TOW
 * FOV – field of view
 * FPA – Focal Plane Array
 * FPL – Final Protective Fire
 * FRAG – fragmentation
 * FRAGO – FRAGmentary Order. (see OPORD)
 * FRED – Field ration eating device (Australia)
 * FRES – Future Rapid Effect System
 * FROG – free rocket over ground
 * FSCL – fire support coordination line
 * FSCM – fire support coordination measure
 * FSCV – fire support combat vehicle
 * FS – fire support element
 * FSED – full-scale engineering development (US)
 * FSSG – Force Service Support Group
 * FST – Future Soviet Tank/Follow-on Soviet Tank
 * FSV – fire support vehicle
 * FSV – Future Scout Vehicle (US)
 * FTA – Frangible Training Ammunition
 * FTMA – Future Tank Main Armament
 * FTS – Future Tank Study
 * FTT – Field Tactical Trainer
 * FUBAR – Fouled/Fucked Up Beyond All Reason/Recognition/Repair
 * FUE – First Unit Equipped
 * FUG – Felderitц Usу Gépkosci
 * FV – fighting vehicle
 * FV/GCE – fighting vehicle gun control equipment
 * FVDD – Fighting Vehicle Development Division
 * FVRDE – Fighting Vehicle Research and Development Establishment (UK)
 * FVS – Fighting Vehicle System (US)
 * FVSC – Fighting Vehicle Systems Carrier (US)
 * FY – fiscal year

G

 * g – gramme(s)
 * G – gendarmerie
 * GAMA – Gun Automatic Multiple Ammunition
 * GAO – General Accounting Office
 * GAP – Gun Aiming Post
 * GBAD – Ground Based Air Defence
 * GCE – gun control equipment
 * GCT – Grande Cadence de Tir (high rate of fire)
 * GCU – Gun Control Unit
 * GCW – Gross Combined Weight (not "Gross Combat Weight"). Gross Vehicle Weight (GVW) plus Gross Trailer Weight (GTW).
 * GD – General Dynamics
 * GDLS – General Dynamics Land Systems
 * GDU – Gun Display Unit
 * GFE – Government Furnished Equipment
 * GH – gun-howitzer
 * GIGN- Groupe d'intervention de la Gendarmerie Nationale ("National Gendarmerie Intervention Group")
 * GIAT – Groupement Industriel des Armements Terrestres
 * GL – Grenade Launcher
 * GLATGM – Gun Launched Anti-Tank Guided Missile
 * GLC – gun lay computer
 * GLDNSM – Grenade Launcher Day-Night Sight Mount
 * GLH-H – Ground-Launched Hellfire-Heavy (US)
 * GLLD – Ground Laser Locator Designator (US)
 * GLS – Gesellschaft für Logistischen Service
 * GM, MVO – General Motors, Military Vehicle Operations
 * GMC – General Motors Corporation
 * GMG – Grenade Machine Gun
 * GMLRS – Guided Multiple Launch Rocket System
 * GMS – Gun Management System
 * GND – Ground (electrical)
 * GOCO – government-owned, contractor-operated (US)
 * GOP – General Out Post
 * GP – General Purpose
 * GP – guided projectile
 * GPMG – General Purpose Machine Gun
 * GPO – gun position officer
 * GPS – Global Positioning System
 * GPS – gunner's primary sight
 * GPSS – Gunner's Primary Sight Subsystem
 * GR – Gajaba Regiment (Sri Lanka)
 * GREM – Grenade Rifle Entry Munition
 * GRIT – Group, Range, Indication, Type of fire
 * GRU – Glavnoe Razvedyvatel'noe Upravlenie, meaning Main Intelligence Directorate
 * GSR – General Staff Requirement (US)
 * GSRS – General Support Rocket System
 * GSG9- Grenzschutzgruppe 9 der Bundespolizei (Border Protection Group 9 of the Federal Police)
 * GSOF – Georgian Special Operations Forces
 * GST – General Staff Target
 * GST – Gesellschaft fьr System-Technik
 * GTCS – Gun Test and Control System
 * GTG – Good To Go
 * GTI – German Tank Improvement
 * GTW – Gross Trailer Weight
 * GVW – Gross Vehicle Weight. Curb weight plus max payload weight.
 * GW – Gemunu Watch (Sri Lanka)
 * GW – guided weapon

H

 * h – hour(s)
 * H&K – Heckler and Koch
 * HAB – Heavy Assault Bridge (US)
 * HAB – Heavy Artillery Brigade (UK)
 * HAG – Heavy Artillery Gun
 * HAHO – High Altitude High Opening
 * HALO – High Altitude Low Opening, High Activity/Low Observable
 * HAMS – Headquarters and Maintenance Squadron – Marine Aircraft Group (USMC)
 * HAWK – Homing-All-the-Way-Killer (US)
 * HB – heavy barrel
 * HBAR – Heavy Barrel Assault Rifle
 * HC – Hexachloroethane/zinc
 * HC – high-capacity
 * HC – Hollow Charge
 * HCER – high-capacity extended range
 * HCHE – high-capacity high-explosive
 * HCT – HOT Compact Turret
 * HDS – HOLOgraphic Diffraction Sight
 * HE – high-explosive
 * HE-APERS – high-explosive anti-personnel
 * HE-FRAG – high-explosive fragmentation
 * HE-FRAG-FS – high-explosive fragmentation – fin-stabilised
 * HE-FS – high-explosive – fin-stabilised
 * HE-S – high-explosive spotting
 * HE-T – high-explosive tracer
 * HE/PR – high-explosive practice
 * HEAA – High-Explosive Anti-Armour
 * HEAB – High-Explosive Air Burst
 * HEAP – High-Explosive Armor-Piercing
 * HEAP-T – high-explosive anti-personnel – tracer
 * HEAT – high-explosive anti-tank
 * HEAT-FS – high-explosive anti-tank fin-stabilised
 * HEAT-MP – high-explosive anti-tank multipurpose
 * HEAT-MP(P) – high-explosive anti-tank multipurpose (practice)
 * HEAT-T – high-explosive anti-tank – tracer
 * HEAT-T-HVY – high-explosive anti-tank – tracer – heavy
 * HEAT-T-MP – high-explosive anti-tank – tracer – multipurpose
 * HEAT-TP-T – high-explosive anti-tank – target practice – tracer
 * HED-D – Hybrid Electric Drive – Demonstrator
 * HEDP – high-explosive dual-purpose
 * HEER – High-Explosive Extended Range (US)
 * HEF – high-explosive fragmentation
 * HEFT – High-Explosive Follow Through
 * HEI – high-explosive incendiary
 * HEIAP – High-explosive incendiary/armor-piercing ammunition
 * HEIT – high-explosive incendiary tracer
 * HEL – High-Energy Laser (US)
 * HEL – Human Engineering Laboratory (US)
 * HELP – Howitzer Extended Life Program (US)
 * HEMAT – Heavy Expanded Mobility Ammunition Trailer (US)
 * HEMP – High-Explosive Multi-Purpose
 * HEMTT – Heavy Expanded Mobility Tactical Truck (US)
 * HEP – high-explosive plastic
 * HEP-T – high-explosive practice – tracer
 * HEPD – high-explosive point detonating
 * HERA – high-explosive rocket-assisted
 * HESH – high-explosive squash head
 * HESH-T – high-explosive squash head – tracer
 * HET-PF – high-explosive tracer – percussion fuze
 * HETF – High Explosive Time Fuzed
 * HETS – Heavy Equipment Transport System
 * HFCC – Howitzer Fire-Control Computer (US)
 * HFHTB – Human Factors Howitzer TestBed (US)
 * HFM – Heavy Force Modernisation (US)
 * HIFV – Heavy Infantry Fighting Vehicle
 * HIMAG – High-Mobility Agility Test Vehicle (US)
 * HIMARS – High-Mobility Artillery Rocket System (US)
 * HIP – Howitzer Improvement Program (US)
 * HIRE – Hughes Infrared Equipment
 * HITP – High-Ignition Temperature Propellant
 * HIU – Heading Indicator Unit
 * HMC – Howitzer Motor Carriage
 * HMD – Helmet-Mounted Display
 * HMG – Heavy Machine Gun
 * HMH – Marine Heavy Helicopter Squadron
 * HMLC – High-Mobility Load Carrier
 * HML/A – Marine Light/Attack Helicopter Squadron
 * HMM – Marine Medium Helicopter Squadron
 * HMMWV – High Mobility Multipurpose Wheeled Vehicle
 * HMX – Marine Special Mission Helicopter Squadron
 * HOE – Holographic Optical Element
 * HOT – Haute subsonique Optiquement Téléguidé
 * How – Howitzer
 * HP – High Power; Hollow Point
 * hp – Horsepower
 * HPFP – High-Performance Fragmentation Projectile
 * HPS – Helmet Pointing System (or Sight)
 * HPT – high-pressure test
 * HRST – Helicopter Rope Suspension Technique
 * HRU – Heading Reference Unit
 * HS – Headquarters Squadron – Marine Wing Support Group (USMC)
 * HSS – Hunter Sensor Suite
 * HSTV(L) – High-Survivability Test Vehicle (Lightweight) (US)
 * HTTB – High-Technology TestBed (US)
 * HUD – Head-up display
 * HVAP – high-velocity armour-piercing
 * HVAP-T – high-velocity armour-piercing tracer
 * HVAPDS – high-velocity armour-piercing discarding sabot
 * HVAPDS-T – high-velocity armour-piercing discarding sabot – tracer
 * HVAPFSDS – high-velocity armour-piercing fin-stabilised discarding sabot
 * HVCC – High Velocity Canister Cartridge
 * HVM – Hypervelocity Missile
 * HVSS – horizontal volute spring suspension
 * HVSW – Hypervelocity Support Weapon
 * HVTP-T – high-velocity target practice – tracer
 * HWSTD – High Water Speed Technology Demonstrator
 * HYPAK – Hydraulic Power Assist Kit

I

 * I – Incendiary
 * IAF – Indian Air Force
 * IAFV – infantry armoured fighting vehicle
 * IAI – Israel Aircraft Industries
 * IAL – Infrared Aiming Light
 * IASD – Instant Ammunition Selection Device
 * IBAS – Improved Bradley Acquisition System
 * ICBM – Intercontinental ballistic missile
 * ICC – information co-ordination centre
 * ICM – Improved Conventional Munition
 * ICM – BB improved conventional munition base bleed
 * ICV – Infantry Combat Vehicle
 * IDF – Israel Defense Forces
 * IDF – Indirect fire
 * IDW – Individual Defence Weapon
 * IED – Improvised Explosive Device
 * IEPG – Independent European Program Group
 * IFCS – Improved/Integrated Fire-Control System
 * IFF – Identification Friend or Foe
 * IFV – infantry fighting vehicle
 * IFVwCM – Infantry Fighting Vehicle with Integrated Countermeasures (US)
 * IGLS – Individual Grenade Launcher System
 * II – image intensification/intensifier
 * IIR – Imaging Infra-Red
 * ILL – illuminating
 * ILMS – Improved Launcher Mechanical System
 * ILS – Integrated Logistic Support
 * IM – Insensitive Munition(s)
 * IMMLC – Improved Medium Mobility Load Carrier
 * IMSC – International Maritime Security Construct
 * IMU – Inertial Measurement Unit
 * INSAS – Indian Small Arms System
 * InSb – Indium-antimonide
 * INS -Indian Naval ship
 * IOC – initial operational capability
 * IOF – Indian Ordnance Factory
 * IPB – Intelligence Preparation of the Battlefield
 * IPF – Initial Production Facility
 * IPO – International Programme Office
 * IPPD – Integrated Product Process Development
 * IR – Infra-Red
 * IRBM – Intermediate-range ballistic missile
 * IRU – Inertial Reference Unit
 * IS – internal security
 * ISD – In Service Date
 * ISGU – Integrated Sight and Guidance Unit
 * ISR – Intelligence Surveillance and Reconnaissance
 * ISU – Integrated Sight Unit
 * ISV – Internal Security Vehicle
 * ITAS – Improved Target Acquisition System
 * ITOW – Improved TOW
 * ITPIAL – Infra-red Target Pointer/Illuminator/Aiming Laser
 * ITT – Invitation To Tender
 * ITV – Improved TOW Vehicle (US)
 * IVPDL – Inter-Vehicle Positioning and Data Link (US)
 * IWAT Insurgency Weapons And Tactics
 * IW – Individual Weapon
 * IWS – Improved Weapon System

J

 * JASDF – Japan Air Self-Defense Force
 * JBMoU – Joint Ballistic Memorandum of Understanding
 * JDAM – Joint Direct Attack Munition
 * JERRV – Joint Engineer Rapid Response Vehicle
 * JGSDF – Japan Ground Self-Defense Force
 * JHP – Jacketed hollow point
 * JMAC – Joint Medium-calibre Automatic Cannon
 * JMSDF – Japan Maritime Self-Defense Force
 * JOIR – Joint Operations Information Range
 * JPO – Joint Project Office
 * JSC – Joint Steering Committee
 * JSCS – Joint Service Combat Shotgun
 * JSDF – Japan Self-Defense Force
 * JSOC – Joint Special Operations Command
 * JSP – Jacketed Soft Point
 * JSSAMP – Joint Services Small Arms Master Plan
 * JSSAP – Joint Service Small Arms Program
 * JTIDS – Joint Tactical Information Distribution System

K

 * KAAV – Korean Armoured Amphibious Vehicle
 * KAC – Knight's Armament Company
 * KE – Kinetic energy
 * KEC – Kaman Electromagnetics Corporation
 * KEM – Kinetic Energy Missile (US)
 * kg – kilogramme(s)
 * KHA – Killed Hostile Action (US Vietnam War)
 * KIA – Killed in Action
 * KIFV – Korean Infantry Fighting Vehicle
 * KNHA – Killed Non-Hostile Action (US Vietnam War)
 * KPA – Korean People's Army

L

 * LAAG – light anti-aircraft gun
 * LAAM – Light Anti-Aircraft Missile
 * LCAC – Landing Craft Air Cushion
 * LAD – light aid detachment
 * LADS – light air defense system (US)
 * LAG – Light Artillery Gun
 * LALO – Low Altitude Low Opening
 * LAM – Laser Aiming Module
 * LAPES – Low-Altitude Parachute Extraction System
 * LAR – Light Automatic Rifle
 * LASER – Light Amplification by Stimulated Emission of Radiation
 * LASIP – Light Artillery System Improvement Plan
 * LATS – Light Armoured Turret System
 * LAU – Light Armoured Unit
 * LAV – Light Armored Vehicle (US)
 * LAV – Light Assault Vehicle (US)
 * LAV-AD – Light Armored Vehicle – Air Defense
 * LAW – Light Anti-tank Weapon
 * LB – Long Barrel
 * LC – Laser Collimator
 * LCD – Liquid crystal display
 * LCS – Loader Control System
 * LCU – Landing Craft Utility
 * LCV – Light Contingency Vehicle (LCV) (US)
 * LD – Low drag, Line of Departure
 * LE – Law Enforcement
 * LED – light emitting diode
 * LEP – Life Extension Programme
 * LEU – Launcher Erector Unit
 * LF – ATGW Light Forces' Anti-Tank Guided Weapon
 * LF – Linked Feed
 * LFA – Low Flying Area
 * LFHG – Lightweight Fragmentation Hand Grenade
 * LFL – Light Fighter Lethality
 * LIA – Linear Induction Accelerator
 * LIC – Low Intensity Conflict
 * LIMAWS – Lightweight Mobile Artillery Weapon System
 * LION – Lightweight Infra-red Observation Night sight
 * LIW – Lyttleton Engineering Works
 * LKP – Loader Keyboard Panel
 * LLAD – low-level air defence
 * LLLTV – low light level television
 * LLM – Launcher Loader Module
 * LMAW – Light Multi-purpose Assault Weapon
 * LMG – Light Machine Gun
 * LNS – Land Navigation System
 * LNS – Laying and Navigation System
 * L/O – Liaison Officer
 * LOAL – Lock-On After Launch
 * LOBL – Lock-On Before Launch
 * LOC – Line Of Communication
 * LOLEX – Low-altitude parachute-extraction system
 * LOS – Line Of Sight
 * LOSAT – Line Of Sight Anti-Tank
 * LOSBR – Line Of Sight Beam Riding
 * LP – Liquid Propellant
 * LP – Listening Post
 * LPC – Launch Pod Container
 * LPC – Launcher Pod Carrier
 * LPG – Liquid Propellant Gun
 * LPO – Leading Petty Officer
 * LPT – Low-Profile Turret
 * LPTS – Lightweight Protected Turret System
 * LR – Long Rifle
 * LR – Long-Range
 * LRAR – Long Range Artillery Rocket
 * LRASS – Long-Range Advanced Scout System
 * LRAT – long-range anti-tank
 * LRBB – long-range base bleed
 * LRD – Long Range Deflagrator
 * LRF – laser rangefinder
 * LRF – Low Recoil Force
 * LRHB – long-range hollow base
 * LRIP – Low-Rate Initial Production
 * LRM – Laser Rangefinder Module
 * LRN – Lead Round Nose
 * LRN – Low Recoil NORICUM
 * LRRP – Long Range Reconnaissance Patrol
 * LRSA – Long Range Sniper Ammunition
 * LRSU – Long Range Surveillance Unit
 * LRU – Launcher Replenishment Unit
 * LRU – Line Replacement Unit
 * LRU – Line-Replaceable Unit
 * LSAT- Lightweight Small Arms Technologies
 * LSB – Landing Support Battalion
 * LSO – Landing signal officer
 * LSS – Lightweight Shotgun System
 * LSVW – Light Support Vehicle, Wheeled (Canada)
 * LSW – Light Support Weapon
 * LTA – Launch Tube Assembly
 * LTD – Laser Target Designator
 * LTFCS – Laser Tank Fire-Control System
 * LTP – Laser Target Pointer, Luminesant Training Projectile
 * LUTE – Lightweight Uncooled Thermal Imager Equipment
 * LVA – landing vehicle assault (US)
 * LVS – Lightweight Video Sight
 * LVT – Landing Vehicle Tracked (US)
 * LVTC – Landing Vehicle Tracked Command (US)
 * LVTE – Landing Vehicle Tracked Engineer (US)
 * LVTH – Landing Vehicle Tracked Howitzer (US)
 * LVTP – Landing Vehicle Tracked Personnel (US)
 * LVTR – Landing Vehicle Tracked Recovery (US)
 * LWC – Lead Wad Cutter
 * LWIR – Long Wave Infrared
 * LWL – LightWeight Launcher
 * LWML – LightWeight Multiple Launcher
 * LWMMG – LightWeight Medium Machine Gun
 * LWMS – LightWeight Modular Sight
 * LWS – laser warning system
 * LWT – light weapon turret
 * LZ – landing zone
 * LRW – Light Repair Works (Indian Army)

M

 * m – metre(s)
 * m/s – metres per second
 * MAB – Marine Amphibious Brigade
 * MABS – Marine Air Base Squadron
 * MAC – Medium Armored Car (US)
 * MAC – Military Airlift Command
 * MACS – Modular Artillery Charge System
 * MACS – Marine Air Control Squadron
 * MADLS – Mobile Air Defence Launching System
 * MAF – Marine Amphibious Force
 * MAG – Marine Aircraft Group
 * MAGTEC – Marine Air/Ground Training & Education Command
 * MAGTF – Marine Air/Ground Task Force
 * MAHEM – Magnetohydrodynamic Explosive Munition
 * MALOS – Miniature Laser Optical Sight
 * MALS – Marine Air Logistics Squadron
 * MAMBA – Mobile Artillery Monitoring Battlefield Radar
 * MANPADS – Man Portable Air Defense System
 * MAOV – Mobile Artillery Observation Vehicle
 * MAP – Military Aid Programme
 * MAPS – Modular Azimuth Position System
 * MAR – Micro Assault Rifle
 * MARDI – Mobile Advanced Robotics Defence Initiative (UK)
 * MARDIV – Marine Division (US)
 * MARS – Military Amateur Radio Station
 * MARS – Mini Assault Rifle System
 * MARS – Multi-purpose Aiming Reflex Sight
 * MARS – Multiple Artillery Rocket System
 * MASS – Marine Air Support Squadron
 * MATCS – Marine Air Traffic Control Squadron
 * MATSG – Marine Air Training Support Group
 * MAU(SOC) – Marine Amphibious Unit (Special Operations Capable)
 * MAV – maintenance assist vehicle
 * MAVD – MLRS Aim Verification Device
 * MAW – Marine Air Wing (US)
 * MBA – main battle area
 * MBB – Messerschmitt-Bцlkow-Blohm
 * MBC – Mortar Ballistic Computer
 * MBF – Multiple-barrel firearm
 * MBT – main battle tank
 * MCISRE – Marine Corps Intelligence, Surveillance, and Reconnaissance Enterprise
 * MCLOS – Manual Command to Line Of Sight
 * MCRV – Mechanised Combat Repair Vehicle
 * MCS – Microclimate Conditioning System
 * MCS – modular charge system
 * MCSK – Mine Clearance System Kit (US)
 * MCT – Medium Combat Tractor (US)
 * MCT – Mercury Cadmium Telluride
 * MCV – Mechanised Combat Vehicle
 * MCWL – Marine Corps Warfighting Laboratory
 * MCWS – Minor Caliber Weapons Station (US)
 * MDB – Multi Domain Battle
 * MDMP – Military Decision Making Process
 * MDU – Map Display Unit
 * MEB – Marine Expeditionary Brigade
 * MEDEVAC – Medical Evacuation
 * MEF – Marine Expeditionary Force
 * MENS – Mission Element Need Statement (US)
 * MEP – Modular Explosive Penetrator
 * MEPS – Military Entrance Processing Station
 * METO – Middle East Treaty Organisation; CENTO or Baghdad Pact
 * METL – Mission Essential Task List
 * METT-TC – Mission, Enemy, Terrain and weather, Troops and support available—Time available, Civilians
 * METT-TSL – Mission, Enemy, Terrain and weather, Troops and fire support available – Time available, Space, Logistics
 * MEU – Marine Expeditionary Unit
 * MEU(SOC) – Marine Expeditionary Unit (Special Operations Capable)
 * MEV – medical evacuation vehicle (US)
 * MEWS – Mobile Electronic Warfare System
 * MEWSS – Mobile Electronic Warfare Support System
 * MF – multifunction
 * MFC – Mortar Fire Control(ler)
 * MFCS – Multi-Fire Control System/Mortar Fore Control System
 * MFCV – Missile Fire-Control Vehicle
 * MFF – munition filling factory
 * MG – machine gun
 * MGB – Medium Girder Bridge
 * MGL – Multiple Grenade Launcher
 * MGS – Mobile Gun System
 * MGTS – MultiGun Turret System
 * MGU – Mid-course Guidance Unit
 * MI – Military Intelligence
 * MIA – Missing In Action
 * MICOM – Missile Command (US)
 * MICV – Mechanised Infantry Combat Vehicle
 * MILAN – Missile d'Infantrie Léger Antichar (light infantry anti-tank missile)
 * MILDEC – Military deception
 * MILES – Multiple Integrated Laser Engagement System (US)
 * MILSPEC – Military Specification
 * MILSTD – MILitary STANdard
 * MILSTAR – MILitary Strategic and Tactical Relay (US)
 * MIPS – Medium Integrated Propulsion System (US)
 * MIR – Mechanized Infantry Regiment (Sri Lanka)
 * MIRV – Multiple independently targetable reentry vehicle
 * MLA – Manufacturing Licence Agreement
 * MLC – Military Load Class
 * MLC – Modular Load Carrier
 * MLF – Marine Logistics Force
 * MLR – Marine Littoral Regiment
 * MLI – Mid-Life Improvement
 * MLO – Muzzle Loaded Ordnance
 * MLRS – Multiple Launch Rocket System (US)
 * mm – millimetre(s)
 * MMBF – mean miles between failures
 * MMG – Medium Machine Gun
 * MMS – mast-mounted sight
 * MMS – Modular Mounting System
 * MNVD – Monocular Night Vision Device
 * MoA – Memorandum of Agreement
 * MOA – Minute Of Angle
 * MoD – Ministry of defence
 * MODA – Ministry of Defence and Aviation
 * MOLF – Modular Laser Fire Control (Germany)
 * MOLLE – MOdular Lightweight Load-carrying Equipment
 * MOPP – Mission Oriented Protective Posture (US)
 * MOS – Military Occupational Specialty (US)
 * MoU – Memorandum of Understanding
 * MOUT – Military Operations in Urban Terrain (urban warfare) (US)
 * MP – Machine Pistol
 * MP – Military police
 * MPBAV – MultiPurpose Base Armoured Vehicle
 * MPC – MultiPurpose Carrier (Netherlands)
 * MPDS – Missile Piercing Discarding Sabot
 * MPGS – Mobile Protected Gun System (US)
 * MPI – Mean Point of Impact
 * MPIM – MultiPurpose Individual Munition
 * MPM – MultiPurpose Munition
 * MPS – Maritime Prepositioning Ships (US)
 * MPV – Multi-Purpose Vehicle
 * MPWS – Mobile Protected Weapon System (US)
 * MR – Medium Range
 * MRAP – Mine Resistant Ambush Protected (Vehicle)
 * MRAR – MultiRole Assault Round
 * MRAV – MultiRole Armoured Vehicle
 * MRBF – mean rounds before failure
 * MRBS – mean rounds between stoppages
 * MRE – Meal Ready to Eat
 * MRS – multiple rocket system
 * MRS – muzzle reference system
 * MRSI – Multiple Round Simultaneous Impact
 * MRV(R) – Mechanised Recovery Vehicle (Repair)
 * MRVR – Mechanised Repair and Recovery Vehicle (US)
 * MSSG – MAU/MEU Service Support Group (USMC)
 * MSL – Missile
 * MSR – Missile Simulation Round
 * MSR – Main Supply Route
 * MSTAR – Man-portable Surveillance and Target Acquisition Radar
 * MSV – Modular Support Vehicle
 * MT – mechanical time
 * MTB – Mobility TestBed
 * MTBF – Mean Time Between Failure
 * MTI – moving target indication
 * MTL – Materials Technology Laboratory (US)
 * MTR – Mobile Test Rig (US)
 * MTSQ – mechanical time and super-quick
 * MTSQ – Mechanical Time Semi-Quick
 * MTU – Motoren- und Turbinen-Union
 * MTVL – mobile tactical vehicle light
 * MUGS – Multipurpose Universal Gunner Sight
 * MULE – Modular Universal Laser Equipment (US)
 * MUSS – Multifunctional Selfprotection System
 * MV – muzzle velocity
 * MVEE – Military Vehicles and Engineering Establishment (UK)
 * MVRS – Muzzle Velocity Radar System
 * MWCS – Marine Wing Communications Squadron
 * MWHS – Marine Wing Headquarters Squadron
 * MWS – Manned Weapon Station (US)
 * MWS – Modular Weapon System
 * MWSG – Marine Wing Support Group
 * MWSS – Marine Wing Support Squadron

N

 * NAS – Naval Air Station
 * NATO – North Atlantic Treaty Organization
 * NAVSEA – Naval Sea Systems Command
 * NBC – Nuclear, Biological, Chemical
 * NBMR – NATO Basic Military Requirement
 * NCIS – Naval Criminal Investigative Service (US)
 * NCO – Non-Commissioned Officer (US, E-4 – E-9)
 * NCOIC – Non-Commissioned Officer In Charge
 * NDI – Non-developmental item
 * NDU – Navigation Display Unit
 * NFOV – Narrow Field Of View
 * NG – New/Next Generation
 * Ni/Cd – Nickel Cadmium
 * NLAW – Next Light (weight) Anti-armour Weapon
 * NLOS-C – Non-Line Of Sight-Cannon
 * NLOS-M – Non-Line Of Sight-Mortar
 * NOD(s) – Night Observation Device(s)
 * NOE – Nap-of-the-earth
 * NOTAM – Notice to Airmen
 * NRF – NATO Response Force
 * NS – Network Services
 * NTC – National Training Center (USA)
 * NUGP – nominal unit ground pressure
 * NV – Night Vision
 * NVD – Night Vision Device
 * NVE – Night Vision Equipment
 * NVESD – Night Vision and Electronic Sensors Directorate
 * NVG – Night Vision Goggle
 * NVS – Night Vision System
 * NZDF – New Zealand Defence Force
 * NZEF – New Zealand Expeditionary Force (in WWI & WWII)
 * NZSAS – New Zealand Special Air Service

O

 * OBR – Optical Beam-Riding
 * OCC – Obus à Charge Creusé (shaped-charge shell)
 * OCOKA – Observation and fields of fire, Cover and concealment, Obstacles, Key terrain, and Avenues of Approach.
 * OCSW – Objective Crew-Served Weapon
 * OCU – Operational Centre Unit
 * ODE – Ordnance Development and Engineering (Singapore)
 * OEG – Occluded Eye Gunsight (a type of Collimator sight)
 * OEO – optical and electro-optical
 * OFSA – Objective Family of Small Arms
 * OFSA – One Size Fits All
 * OFW – Objective Force Warrior
 * OHWS – Offensive Hand Weapon System
 * OIC – Officer In Charge
 * OICW – Objective Individual Combat Weapon
 * OLF – Operational Low Flying
 * OOTW – Operations Other Than War
 * OP – Observation post
 * OP – Operators Panel
 * OPCON – OPerational CONtrol
 * OPDW – Objective Personal Defense Weapon
 * OPFOR – OPposing FORces
 * OPORD – OPerations Order
 * OPSEC – OPerational SECurity
 * OPV – Observation Post Vehicle
 * OSW – Objective Sniper Weapon
 * OSC – Operation Strategy Command
 * OSS (USAF) – Operational Support Squadron
 * OSW (USAF) – Operational Support, Weather
 * OT – operational test
 * OTA – overflight top attack
 * OTEA – Operational Test and Evaluation Agency (US)

P

 * P – How pack howitzer
 * P-38 — P-38 can opener (US)
 * P3I – Pre-Planned Product Improvements
 * PAR – pulse acquisition radar
 * PARA – Parachute Regiment
 * PARAMIL – Paramilitary
 * PAT – power-assisted traverse
 * PAWPERSO – Protection, Ammunition, Weapon, Personal Equipment, Radio, Specialist Equipment, Orders
 * PC – Personal Computer
 * PCB – printed circuit board
 * PCC – Police Compact Carbine
 * PCI – Pre-combat inspection
 * PD – Point Defense
 * PD – point detonating
 * PD – Point of Departure
 * PDNA – Positioning Determining/Navigation Unit
 * PDRR – Program Definition and Risk Reduction
 * PDW – Personal Defence Weapon
 * PE – MoD Procurement Executive (UK)
 * PE – Peace Enforcement (US DoD)
 * PEC – Printed Electronic Circuits
 * PENAID – Penetration aid
 * PFD – proximity fuze disconnector
 * PFHE – prefragmented high-explosive
 * PLF – protective line of fire
 * PFPX – prefragmented proximity fuzed
 * PGMM – Precision Guided Mortar Munition
 * PH – Probability of Hit
 * Pi – Probability of incapacitation
 * PIAT – Projector, Infantry, Anti Tank
 * PIBD – Point Initiating Base Detonated
 * PID – Positive Identification
 * PIE – pyrotechnically initiated explosive
 * PIP – Product Improvement Programme
 * PL – Phase Line
 * PLA – People's Liberation Army
 * PLAAF – People's Liberation Army Air Force
 * PLAGF – People's Liberation Army Ground Force
 * PLAN – People's Liberation Army Navy
 * PLANAF – People's Liberation Army Naval Air Force
 * PLANMC – People's Liberation Army Navy Marine Corps
 * PLARF – People's Liberation Army Rocket Force
 * PLARS – Position Location And Reporting System (US)
 * PLASSF – People's Liberation Army Strategic Support Force
 * PLC – Programmable Logic Control
 * PLOS – Predicted Line Of Sight
 * PLS – Palletized Load System (US)
 * PM – porte mortier (mortar carrier)
 * PM – Product Manager
 * PMCS – Preventative Maintenance Checks and Services
 * PMEE – Prime Mission Electronic Equipment (USAF)
 * PMO – Program Management Office (US)
 * PMO – Provost Marshall's Office
 * PMOD – Platform Modifications
 * PMS – Pedestal-Mounted Stinger
 * PNU – Position Navigation Unit
 * PM WIN-T – Project Manager Warfighter Information Network-Tactical
 * POA&M – Plan Of Action & Milestones
 * POF – Pakistan Ordnance Factory
 * POG – Person other than Grunt
 * POS – Postes Optiques de Surveillance
 * POW – Prisoner of War
 * PPG – PT Parade Games (Bangladesh Cadet Colleges)
 * PPI – plan position indicator
 * PPS – Precise Positioning Service
 * PPV – Protected Patrol Vehicle
 * PRAC – practice
 * PRAC-T – practice tracer
 * PRESAR – Preparation, React to enemy fire, Establish enemy position, Suppress the enemy, Assault, Reorg
 * PRI – projector reticle image
 * PRP – Personnel Reliability Program (screening and monitoring of individuals with access to "special" weapons)
 * PSBC – Platoon Sergeant's Battle Course
 * PSD – Propulsion System Demonstrator
 * PSO – Peace Support Operations
 * PSS – Primary Sight System
 * PTI – Physical Training Instructor
 * PTO – power take-off
 * PVP – Petit Véhicule Protégé
 * PW – Prisoner of War
 * PWI-SR(GR) – Panser Wagen Infanterie-Standaard (Groep)
 * PWP – Plasticised White Phosphorus
 * PWR – Power

Q

 * QCB – Quick Change Barrel
 * QE – Quadrant Elevation
 * QRF – Quick Reaction Force
 * QTOL – Quiet Take Off And Landing

R

 * RA – Royal Artillery
 * RAA – Royal Australian Artillery
 * RAAM – Rifle-launched Anti-Armour Munition
 * RAAMS – Remote Anti-Armor Mine System (US)
 * PABD – Pay Entry Base Date
 * RAC – Royal Armoured Corps
 * RADIRS – Rapid Deployment Multiple Rocket System (US)
 * RAAF – Royal Australian Air Force
 * RAE – Royal Aircraft Establishment, Royal Aircraft Establishment (Farnborough)
 * RAE – Royal Australian Engineers, Australian Combat Engineers
 * RAF – Royal Air Force
 * RAM-D – reliability, availability, maintainability and durability
 * RAN – Royal Australian Navy
 * RAO – Rear Area Operations
 * RAP – Regimental Aid Post
 * RAP – rocket-assisted projectile
 * RAPI – Reactive Armour Protection
 * RARDE – Royal Armament Research and Development Establishment (UK)
 * RATAC – Radar de Tir pour L'Artillerie de Campagne (radar for field artillery fire)
 * RATELO – Radio Telephone Operator
 * RAW – Rifleman's Assault Weapon
 * RBL – Range and Bearing Launch
 * RBOC – Rapid Bloom Offboard Chaff
 * RC/MAS – Reserve Component/Modified Armament System
 * RCAAS – Remote-Controlled Anti-Armor System (US)
 * RCAF – Royal Canadian Air Force
 * RCC – ROLAND Coordination Center (US)
 * RCWS – Remote-Controlled Weapon Station
 * RCL – Recoilless rifle
 * RCN – Royal Canadian Navy
 * RCS – Radar Cross Section
 * RCT – Regimental Combat Team
 * RCT – Royal Corps of Transport
 * RCV – Robotic Command Vehicle
 * RDF – Rapid Deployment Forces
 * RDF/LT – Rapid Deployment Force Light Tank (US)
 * RDJTF – Rapid Deployment Joint Task Force (US)
 * RDT&E – Research Development Test and Evaluation
 * REME – Royal Electrical and Mechanical Engineers
 * REMF – Rear Echelon Mother Fucker
 * RF – Rimfire
 * RFA – Royal Field Artillery or Royal Fleet Auxiliary
 * RFAS – Russian Federation and Associated States
 * RFC – Royal Flying Corps
 * RFI – request for information
 * RFP – request for proposals
 * RFPI – Rapid Force Projection Initiative
 * RFQ – Request For Quotations
 * RGGS – Rifle Grenade General Service
 * RHA – rolled homogeneous armour
 * RHA – Royal Horse Artillery
 * RIN – the former Royal Indian Navy
 * RIO – Radar Intercept Officer
 * RIS – Rail Interface System
 * RISE – Reliability Improved Selected Equipment
 * RLC – Royal Logistic Corps
 * RLEM – Rifle-Launched Entry Munition
 * RLG – Ring Laser Gyro
 * RLT – Regimental Landing Team
 * RMG – ranging machine gun
 * RN – Royal Navy
 * RNZAF – Royal New Zealand Air Force
 * RNZN – Royal New Zealand Navy
 * RO – Royal Ordnance
 * ROBAT – Robotic Counter-Obstacle Vehicle (US)
 * RoC – Republic of China
 * ROC – required operational characteristics
 * ROE – Rules Of Engagement
 * ROF – Royal Ordnance Factory (UK)
 * ROF – Rate of fire
 * RoK – Republic of Korea
 * RoKMC – Republic of Korea Marine Corps
 * RoKIT – Republic of Korea Indigenous Tank
 * ROR – range only radar
 * ROTA – Royal Ordnance Training Ammunition
 * RP – Red phosphorus
 * RP – rocket-propelled
 * RP – Regimental police
 * RPC – Rocket Pod Container
 * RPG – Rocket-propelled grenade
 * RPG – Ruchnoy Protivotankovy Granatomyot
 * RPV – Remotely piloted vehicle
 * RR – Recoilless rifle
 * RRPR – Reduced Range Practice Rocket
 * RRT – Radio Recon Team
 * RRTR – Reduced Range Training Round
 * RSAF – Royal Small Arms Factory (UK) (now closed)
 * RSN – Role Specialist Nation (US & NATO)
 * RSS – Rosette Scanning Seeker
 * RTE – Rifle Team Equipment
 * RTO – Radio/Telephone Operator
 * RTOL – Reduced Take Off and Landing
 * RTT – Roues Transporteur de Troupes
 * RUC – Royal Ulster Constabulary
 * RV – Rendezvous/Rendezvous point
 * RWS – Remote weapon system (or station)
 * RWR – Radar Warning Receiver

S

 * s – second(s)
 * S&W – Smith & Wesson
 * SA – Situation Awareness
 * SABCA – Société Anonyme Belge de Constructions Aéronautiques
 * SABR – Selectable Assault Battle Rifle
 * SABS – Stabilizing Automatic Bomb Sight
 * SAC – Small Arms Collimator
 * SACLOS – Semi-Automatic Command to Line Of Sight
 * SADA – Standard Advanced Dewar Assembly
 * SADARM – Sense And Destroy Armor (US)
 * SADF – South African Defence Force
 * SADM – Special Atomic Demolition Munition
 * SAE – Society of Automotive Engineers
 * SAF – Small Arms Fire
 * SAFCS – Small Arms Fire Control System
 * SAFIRE – Surface-to-Air Fire
 * SAL – semi-active laser
 * SAL – search and locate
 * SAM – surface-to-air missile
 * SAMM – Société d'Applications des Machines Motrices
 * SANDF – South African National Defence Force
 * SANG – Saudi Arabian National Guard
 * SAP – Semi-Armour-Piercing
 * SAPHEI – Semi-Armour-Piercing High Explosive Incendiary
 * SAPI – semi-armour-piercing incendiary or Small Arms Protective Insert
 * SAR – Search and Rescue
 * SAS – Special Air Service
 * SASR – Special Air Service Regiment
 * SAS-EAS – Sealed Authenticator System – Emergency Action Procedures (Nuclear Weapons Release Control)
 * SASR – Special Application Sniper Rifle
 * SAT – Small Arms Trainer
 * SATCP – Système Anti-aérien à Très Courte Portée (very short-range anti-aircraft system)
 * SAVA – Standard Army Vectronics Architecture
 * SAW – Squad Automatic Weapon
 * SAWS – Squad Automatic Weapon System
 * SB – Short Barrel
 * SCORE – Stratified Charge Omnivorous Rotary Engine
 * SCC - Sea Cadet corps
 * SD – self-destruct(ion)
 * SEAD – Suppression of Enemy Air Defenses
 * SEAL – Sea/Air/Land
 * SEALOCK – Search, Locate, and Communicate or Kill
 * SEATO – Southeast Asia Treaty Organisation
 * SECFOR – Security forces
 * SECGUARD – Security guard
 * SEME – School of Electrical and Mechanical Engineering
 * SEN – shell extended range NORICUM
 * SEP – Soldier Enhancement Programme
 * SF – Special Forces (US/UK)
 * SFCS – Simplified Fire-Control System
 * SFIM – Société de Fabrication d'Instrument de Mesure
 * SFIRR – solid fuel integral rocket/ramjet
 * SFM – Sensor Fuzed Munitions
 * SFMG – Sustained Fire Machine Gun
 * SFSW – Special Forces Support Weapon
 * SFW – Special Forces Weapon
 * SGTS – Second-Generation Tank Sight
 * SHAPE – Supreme Headquarters Allied Powers Europe
 * SH/PRAC – squash head practice
 * SHORAD – Short-Range Air Defence System
 * shp – shaft horsepower
 * SIC – Second in Command
 * SICPS – Standard Integrated Command Post Systems
 * SINCGARS – Single Channel Ground/Air Radio System
 * SIP – System Improvement Plan/Programme
 * SIPS – Small Integrated Propulsion System
 * SITREP – Situation Report
 * SJFN – Semi-Jacketed Flat Nose
 * SJHP – Semi-Jacketed Hollow Point
 * SKOT – Sredni Kolowy Opancerzny Transporter (armoured personnel carrier)
 * SLA – Sri Lanka Army
 * SLAC – Sri Lanka Armoured Corps
 * SLAF – Sri Lanka Air Force
 * SLAGSE – Sri Lanka Army General Service Corps
 * SLAOC – Sri Lanka Army Ordnance Corps
 * SLAP – saboted light armor penetrator
 * SLAPC – Sri Lanka Army Pioneer Corps
 * SLASC – Sri Lanka Army Service Corps
 * SLAW – Shoulder-Launched Assault Weapon
 * SLAWC – Sri Lanka Army Women's Corps
 * SLCG – Sri Lanka Coast Guard
 * SLCMP – Sri Lanka Corps of Military Police
 * SLE – Sri Lanka Engineers
 * SLEME – Sri Lanka Electrical and Mechanical Engineers
 * SLEP – Service Life Extension Program (US)
 * SLLI – Sri Lanka Light Infantry
 * SLMC – Sri Lanka Army Medical Corps
 * SLNG – Sri Lanka National Guard
 * SLN – Sri Lanka Navy
 * SLR – Self-Loading Rifle
 * SLRC – Sri Lanka Rifle Corps
 * SLSR – Sri Lanka Sinha Regiment
 * SLWAGL – Super Light Weight Automatic Grenade Launcher
 * SM – smoke
 * SMAW – Shoulder-launched Multi-purpose Assault Weapon
 * SMG – sub-machine gun
 * SMK – Smoke
 * SMP – Surface Mine Plough
 * SMU – Special Mission Unit
 * SNAFU – Situation Normal, All Fouled Up
 * SNCO – Staff Non-Commissioned Officer (USMC, E-6 – E-9)
 * SNCOIC – Staff Non-Commissioned Officer In Charge (USMC)
 * SOCOM – Special Operations Command
 * SOF – Special Operations Forces
 * SOG – Speed Over Ground
 * SOP – Standing/Standard Operating Procedure(s)
 * SOS – Struck Off Strength
 * SP – Shore Patrol
 * SP – self-propelled
 * SP – Soft Point
 * SPAAG – self-propelled anti-aircraft gun
 * SPAAM – self-propelled anti-aircraft missile
 * SPAG – self-propelled assault gun
 * SPARK – solid propellant advanced ramjet kinetic energy missile
 * SPAS – Special Purpose Automatic Shotgun, like SPAS-12 or SPAS-15
 * SPATG – self-propelled anti-tank gun
 * SPAW – self-propelled artillery weapon
 * SPEAR – Small Precision Enhanced Aiming Rangefinder
 * SPG – self-propelled gun
 * SPH – self-propelled howitzer
 * SPIE – Special Patrol Insertion/Extraction
 * SPL – self-propelled launcher
 * SPLL – Self-propelled Loader Launcher
 * SPLY – Supply
 * SPM – self-propelled mortar
 * SPP – Special Purpose Pistol
 * SPR – Special Purpose Rifle
 * SPS – Standard Positioning Service
 * SPSM – Sensorgezundete Panzerabwehr SubMunition
 * SPW – Special Purpose Weapon
 * SR – Short Rifle
 * SR – Sniper Rifle
 * SR – Staff Requirement
 * SR – Special Reconnaissance
 * SRR – Special Reconnaissance Regiment
 * SRAW – Short Range Assault Weapon
 * SRC – Space Research Corporation
 * SRG – shell replenishment gear
 * SRI – Short Range Insert
 * SRTS – Short Range Thermal Sight
 * SRU – Shop Replaceable Unit
 * SRU – Slip Ring Unit
 * SRV – Surrogate Research Vehicle (US)
 * SS – Submarine
 * SSA – Special Spaced Armour
 * SSE – Sensitive Site Exploitation
 * SSG – Single Shot Gun
 * SSK – Single Shot Kill
 * SSR – Sniper Support Rifle
 * SSR – Special Support and Reconnaissance Company (DNK)
 * SSW – Squad Support Weapon
 * ST6 – Seal Team Six
 * ST – Staff Target
 * STA – shell transfer arm
 * STAB – Steered Agile Beams
 * STAFF – Small Target Activated Fire-and-Forget (US)
 * STANAG – STANdardisation Agreement
 * STARTLE – Surveillance and Target Acquisition Radar for Tank Location and Engagement (US)
 * STE/ICE – Simplified Test Equipment/Internal Combustion Engine (US)
 * STF – Special Task Force
 * STORM – Small Tactical Optical Rifle-Mounted
 * STOVL – Short Take Off and Vertical Landing
 * STUP – spinning tubular projectile
 * SUB – SUBstitute
 * SUC – Square Ultra Compact
 * SUIT – Sight Unit Infantry Trilux
 * SUSAT – Sight Unit Small Arms Trilux
 * SWARM – Stabilised Weapon and Reconnaissance Mount
 * SWAT – Special Weapons And Tactics
 * SWC – Semi WadCutter
 * SWS – Sniper Weapon System

T

 * T – Tracer
 * TAAR – Tactical Air to Air Refueling
 * TACBE – Tactical beacon
 * TACMS – Army Tactical Missile System (US)
 * TACOM – Tank-automotive and Armaments Command (US)
 * TACP – Tactical Air Control Party
 * TAD – Temporary Additional Duty (Naval Services term) Temporary Duty
 * TADDS – Target Alert Display Data Set (US)
 * TADS – Target Acquisition and Designation System (US)
 * TAM – Tanque Argentino Mediano
 * TAS – Target Acquisition Subsystem
 * TAS – tracking adjunct system
 * TAS – Turret Attitude Sensor
 * TBAT – TOW/Bushmaster Armored Turret (US)
 * TC – Tank Commander, also Truck Commander (US Army)
 * TCO – Tactical Combat Operations
 * TCTO – Time-Compliance Technical Order
 * TCU – tactical control unit
 * TD – Tank Destroyer
 * TDCS – Tank Driver Command System
 * TDD – Target Detection Device
 * TDR – Target Data Receiver
 * TDY – Temporary Duty
 * TE – Tangent Elevation
 * TEL – Transporter-Erector-Launcher
 * TELAR – Transporter-Erector-Launcher And Radar
 * TES – Tactical Environment Simulation
 * TES – target engagement system
 * TESS – Telescopic Sighting System
 * TGMTS – Tank Gunnery Missile Tracking System
 * TGP – Terminally Guided Projectile
 * TGP – Targeting pod
 * TGS – Tank Gun Sight
 * TGSM – terminally guided submunition
 * TGTS – tank gunnery training simulator
 * TI – thermal imaging/imager
 * TIC – Troops In Contact
 * TICM – thermal imaging common modules
 * TID – Tactical Information Display
 * TIIPS – Thermal Imaging and Integrated Position System
 * TIM – Thermal Imaging Module
 * TIPU – Thermal Image Processing Units
 * TIRE – Tank Infra-Red Elbow
 * TIS – thermal imaging system
 * TISEO – Target Identification System Electro-Optical
 * TLC – Transport Launching Container
 * TLD – Top Level Demonstrations
 * TLE – Treaty Limited Equipment
 * TLP – Troop Leading Procedures (US)
 * TLR – Tank Laser Rangefinder
 * TLS – Tank Laser Sight
 * TM&LS – Textron Marine & Land Systems
 * TMBC – Turret Management Ballistic Computer
 * TMP – Tactical Machine Pistol
 * TMS – Turret Modernisation System
 * TMUAS – Turreted Mortar Under Armor System (US)
 * TNI – Tentara Nasional Indonesia
 * TNT – Trinitrotoluene
 * TO – Technical Order
 * TOE – Table of organisation and equipment
 * TOGS – Thermal Observation and Gunnery System (UK)
 * TOP – Total Obscuring Power
 * TOPAS – Transporter Obrneny Pasovy
 * TOTE – Tracker, Optical Thermally Enhanced
 * TOW – Tube-launched, Optically tracked, Wire command link guided (US)
 * TP – Target Practice
 * TP-FL – target practice flash
 * TP-S – or TPS Target Practice-Spotting/Signature
 * TP-SM – target practice – smoke
 * TP-SP – target practice – spotting
 * TP-T – target practice – tracer
 * TPCM – Target Practice Colour-Marking
 * TPDS – Target Practice Discarding Sabot
 * TPFSDS-T – target practice fin-stabilised discarding sabot – tracer
 * TPTF – Target Practice Time Fuzed
 * TR – Triple Rail
 * TRACER – Tactical Reconnaissance Armoured Combat Equipment Requirement (UK)
 * TRACKSTAR – Tracked Search and Target Acquisition Radar System (US)
 * TRADOC – Training and Doctrine Command (US)
 * TSFCS – Tank Simplified Fire-Control System
 * TSQ – time and super-quick
 * TSR – Tavor Sporting Rifle
 * TT – transport de troupes (troop transporter)
 * TTA – Tactical Training Area
 * TTB – Tank TestBed (US)
 * TTD – Transformation Technology Demonstrator
 * TTG – Time To Go
 * TTS – Tank Thermal Sight
 * TU – Terminal Unit
 * TU – Traversing Unit
 * TUA – TOW Under Armor (US)
 * TUR – Tiefflieger-Ьberwachungs-Radar (low-level surveillance radar)
 * TV – Television
 * TWD – Thermal Warning Device
 * TWMP – Track Width Mine Plough
 * TWS – Thermal Weapon Sight
 * TYDP – Ten Year Defence Programme (Australia)

U

 * UAV – Unmanned Aerial Vehicle
 * UBLE – Universal Bridge Launching Equipment
 * UCVP – Universal Combat Vehicle Platform
 * UDR – Ulster Defence Regiment
 * UET – Universal Engineer Tractor (US)
 * UGV – Unmanned Ground Vehicle
 * ULC – Unit Load Container
 * UMA – Universal Mounting Adapter
 * UMP – Universal Machine Pistol
 * USA – United States of America/United States Army
 * USAADS – U.S. Army Air Defense School
 * USAARMS – U.S. Army Armor School
 * USAAVNS – U.S. Army Aviation School
 * USAAF – United States Army Air Forces
 * USAF – United States Air Force
 * USCG – United States Coast Guard
 * USMC – United States Marine Corps
 * USN – United States Navy
 * USP – Universal Self-loading Pistol
 * UTL – Universal Tactical Light
 * UTM – Universal Transverse Mercator
 * UTS – Universal Turret System
 * UV – Ultraviolet
 * UW – Urban warfare

V

 * V – Volt(s)
 * VAB – Véhicule de l'Avant Blindé (front armoured car)
 * VAB – Vickers Armoured Bridgelayer
 * VADS – Vulcan Air Defense System (US)
 * VAE – Vehiculo Armado Exploracion
 * VAK – Vehicle Adaptor Kit
 * VAPE – Vehiculo Apoyo y Exploracion
 * VARRV – Vickers Armoured Repair and Recovery Vehicle
 * VARV – Vickers Armoured Recovery Vehicle
 * VBC – Véhicule Blindé de Combat (armoured combat vehicle)
 * VBCI – Véhicule Blindé de Combat d'Infanterie
 * VBIED – Vehicle-Borne Improvised Explosive Device
 * VBL – Véhicule Blindé Léger (light armoured vehicle)
 * VBM – Véhicules Blindés Modulaires
 * VBSS – Visit Board Search Seizure
 * VC – Vehicle Commander
 * VCA – Véhicule Chenillé d'Accompagnement (tracked support vehicle)
 * VCC – Veicolo Corazzato de Combattimento
 * VCG – Véhicule de Combat du Genie (armoured engineer vehicle)
 * VCI – Véhicule de Combat d'Infanterie; Vehiculo combate infanteria (infantry combat vehicle)
 * VCP – Vehicle Check Point
 * VCR – variable compression ratio
 * VCR – Véhicule de Combat à Roues (wheeled combat vehicle)
 * VCR/AT – Véhicule de Combat à Roues/Atelier Technique (salvage)
 * VCR/IS – Véhicule de Combat à Roues/Intervention Sanitaire (stretchers)
 * VCR/PC – Véhicule de Combat à Roues/Poste de Commandement (HQ)
 * VCR/TH – Véhicule de Combat à Roues/Tourelle HOT (turret with four HOT ATGW)
 * VCR/TT – Véhicule de Combat à Roues/Transport de Troupes (troop carrier)
 * VCTIS – Vehicle Command and Tactical Information System
 * VCTM – Vehiculo de Combate Transporte de Mortero (armoured mortar carrier)
 * VCTP – Vehiculo de Combate Transporte de Personal (armoured personnel carrier)
 * VDA – Véhicule de Défense Anti-aérienne (anti-aircraft defence vehicle)
 * VDAA – Véhicule d'Auto-Défense Anti-aérienne
 * VDC – Voltage Direct Current
 * VDM – viscous damped mount
 * VDSL – Vickers Defence Systems Ltd
 * VDU – visual display unit
 * VEC – Vehiculo de Exploraciòn de Caballerie
 * VEDES – Vehicle Exhaust Dust Ejection System (US)
 * VERDI – Vehicle Electronics Research Defence Initiative (UK)
 * VHIS – visual hit indicator system
 * VIB – Véhicule d'Intervention du Base
 * VIDS – Vehicle Integrated Defence System
 * VINACS – Vehicle Integrated Navigation and Command System
 * VIRSS – Visual and InfraRed Smoke Screening System
 * VITS – Video Image Tracking Systems
 * VLAP – Velocity-enhanced Long-range Artillery Projectile
 * VLC – Véhicule Léger de Combat (light armoured car)
 * VLI – Visible Light Illuminator
 * VLSMS – Vehicle-Launched Scatterable Mine System
 * VMA – Marine Light Attack Squadron
 * VMA(AW) – Marine All-Weather Attack Squadron
 * VMBT – Vickers Main Battle Tank
 * VMF – Marine Fighter Squadron
 * VMFA – Marine Fighter Attack Squadron
 * VMFA(AW) – Marine All-Weather Fighter Attack Squadron
 * VMGR – Marine Aerial Refueler/Transport Squadron
 * VMFP – Marine Aerial Reconnaissance Squadron
 * VMM – Marine Tilt-rotor (MV-22B) Squadron
 * VMU – Marine Unmanned Aerial Vehicle Squadron
 * VMR – Marine Transport Squadron
 * VMAQ – Marine Electronic Warfare Attack Squadron
 * VMS – Vehicle Motion Sensor
 * VNAS – Vehicle Navigation Air System
 * VRL – Véhicule Reconnaissance Léger (light reconnaissance vehicle)
 * VSEL – Vickers Shipbuilding and Engineering Ltd
 * VT – variable time (fuse)
 * VTOL – Vertical Take-Off and Landing aircraft
 * VTP – véhicule transport de personnel (personnel carrier)
 * VTT – véhicule transport de troupe (troop transporter)
 * VVSS – vertical volute spring suspension
 * VXB – Véhicule Blindé à Vocations Multiples (multipurpose armoured car)

W

 * WAAC – Women's Auxiliary Army Corps and individual members of; obsolete
 * WAC – Women's Army Corps and individual members of; obsolete
 * WAF – Women (in the) Air Force and individual members of; obsolete
 * WAM – Wide Area Mines (US)
 * WAMI – Wide Area Motion Imagery (US)
 * WAPC – Wheeled Armoured Personnel Carrier (Canada)
 * WASAD – Wide Angle Surveillance and Automatic Detection Device
 * WAV – Wide Angle Viewing
 * WAVES – Women Accepted for Volunteer Emergency Service (USN); obsolete
 * WES – Wing Engineer Squadron (USMC)
 * WFOV – Wide Field of View
 * WFSV – Wheeled Fire Support Vehicle (Canada)
 * WHA – Wounded Hostile Action (US Vietnam War)
 * WHA – Weapons Head Assembly
 * WHSA – Weapons Head Support Assembly
 * WLR – Weapon Locating Radar
 * WM – Woman/Women Marine(s)
 * WMD – Weapon(s) of Mass Destruction
 * WMRV – Wheeled Maintenance and Recovery Vehicle (Canada)
 * WNHA – Wounded Non-Hostile Action (US Vietnam War)
 * WP – white phosphorus
 * WP-T – white phosphorus – tracer
 * WSM – Winchester Short Magnum
 * WTS – Wing Transportation Squadron (USMC)

X

 * XO – Executive Officer

Y

 * YMRS – Yugoslav multiple rocket system

Z

 * ZULU – Zulu time (timezone equivalent to UTC)