TM 31-210 Improvised Munitions Handbook

The TM 31-210 Improvised Munitions Handbook is a 256 page United States Army technical manual intended for the United States Army Special Forces. It was first published in 1969 by the Department of the Army. Like many other U.S. military manuals Other publicly available U.S. military manuals dealing with improvised explosive devices (IEDs) and unconventional warfare include:


 * DJSM-545-66 Viet Cong Improvised Explosive Mines and Booby Traps (1966);
 * FM 5-31 Boobytraps (1965);
 * FMFRP 12-43 Professional Knowledge Gained from Operational Experience in Vietnam, 1969, Special Issue, Mines and Boobytraps;
 * FM 31-21 Guerrilla Warfare and Special Forces Operations (1961);
 * FM 31-20 Special Forces Operational Techniques (1965);
 * FM 31-20 Doctrine for Special Forces Operations (1990);
 * FM 7-98 Operations in a Low-Intensity Conflict (1992);
 * FM 31-20-5 Special Reconnaissance Tactics, Techniques, and Procedures for Special Forces (1993);
 * FSTC 381-5012 Typical Foreign Unconventional Warfare Weapons (U);
 * Office of Strategic Services (OSS) Simple Sabotage Field Manual (1944);
 * PM 8--94 How to Start and Train a Militia Unit (1994);
 * ST 31-180 Special Forces Handbook (1965);
 * TC 3-21.76 Ranger Handbook (2017);
 * TC 5-31 Viet Cong Boobytraps, Mines, and Mine Warfare Techniques (1969) ;
 * TM 31-200-1 Unconventional Warfare Devices and Techniques - References (1966);
 * TM 31-201-1 Unconventional Warfare Devices and Techniques - Incendiaries (1966). dealing with improvised explosive devices (IEDs) and unconventional warfare, it was declassified and released into the public domain as a result of provisions such as the Freedom of Information Act (FOIA), and is now freely available to the public in both electronic and printed formats.

The manual explains how in unconventional warfare operations, for logistical or security reasons, it may be impossible or unwise to use conventional military munitions as tools when conducting certain missions. Starting from this consideration, the manual describes the manufacture of various types of ordnances from readily available materials, from junk piles, common household chemicals and supplies purchased from regular stores.

The manual was mentioned in news reports by various media after it was seized from people suspected of planning guerrilla or terrorism activities.

The manual is one of the best official references on improvised explosive devices (IEDs) manufacturing, and some of the weapons described in it have been used against U.S. troops by foreign troops. For example, the hand-grenade-in-a-can trap was used against U.S. troops in Vietnam. Furthermore, the manual was found in many abandoned safe houses of various Islamist groups, for example in Kabul, Mazar-e Sharif and Kandahar (Afghanistan), as well as in destroyed training camps.

The TM 31-210 manual was subject to considerations regarding the repercussions of easy public access to informations on the artisanal manufacturing of weapons and explosives.

The manual has also been mentioned in scientific literature, used as a reference for works dealing with topics such as ballistics, forensic investigations, security engineering and counterterrorism.

Sections
The TM 31-210 manual consists of seven main sections:


 * Explosives and propellants (including igniters)
 * Mines and grenades
 * Small arms weapons and ammunition
 * Mortars and rockets
 * Incendiary devices
 * Fuses, detonators & delay mechanisms
 * Miscellaneous

The miscellaneous section deals with the production of various types of trigger mechanisms (pressure, pressure release, traction, etc.), a makeshift precision balance, electric batteries, makeshift bulletproof barricades and more. The manual ends with two appendices, which briefly deal with the properties of some primary and secondary explosives.

Popular culture
The TM 31-210 manual appeared as an "Easter egg" in the 1995 CGI animated film, Toy Story. In the scene where Woody is trapped under a blue plastic box in Sid's bedroom, it's possible to see behind him a document titled "TM 31-210 Improvised Interrogation Handbook", a clear reference to the actual document.