User:Hungrydog55/sandbox/military/pacificfront/1945-04 Okinawa groundredo



This is the order of battle for the US invasion of the island of Okinawa, called Operation Iceberg, the final Allied offensive in the Pacific Theater of Operations in World War II.

The defending Japanese military was determined to inflict a casualty rate so high that the U.S. government would choose not to invade the Japanese home islands. To this end, the southern portion of the island had been covered with the most extensive system of fortifications and fields of fire the Americans had yet encountered. In anticipation of this level of resistance, five full divisions, two Marine and three Army, were committed to the struggle.

The initial American landings took place on 1 April 1945 and the island was not declared secure until 22 June, a period of 82 days, far longer than was expected by US planners. Four days before the end of the campaign, Lieutenant General Simon Bolivar Buckner Jr. became the highest ranking U.S. military officer to be killed in action in the Second World War.

The casualty rate eundure by the US _____________

Summary of US ground forces
 * US Tenth Army SSI.svg US Tenth Army
 * Lieutenant General Simon Bolivar Buckner Jr., USA (KIA 18 Jun)
 * USMC III Phib Corps Large.png III Amphibious Corps
 * Major General Roy S. Geiger, USMC
 * Left: 6th Marine Division (24,356 officers and enlisted)
 * Right: 1st Marine Division (26,274 officers and enlisted)
 * XXIV Corps SSI.gif XXIV Army Corps
 * Major General John R. Hodge, USA
 * Left: 7th Infantry ("Bayonet") Division (21,929 officers and enlisted)
 * Right: 96th Infantry ("Deadeye") Division (22,330 officers and enlisted)
 * Reserve: 27th Infantry ("New York") Division (16,143 officers and enlisted)

American forces


US Tenth Army Lieutenant General Simon Bolivar Buckner Jr., USA (KIA 18 Jun) Major General Roy S. Geiger, USMC (18 Jun thru 23 Jun) General Joseph W. Stilwell, USA (from 23 Jun)

Northern Landing Area
III Amphibious Corps Major General Roy S. Geiger Chief of Staff: Brigadier General Merwin H. Silverthorn Chief of Corps Artillery: Brigadier General David R. Nimmer

Embarked in Task Force 53 under Rear Admiral Lawrence F. Reifsnider



Left Beaches

 * 6th_Marine_division.gif 6th Marine Division (24,356 officers and enlisted)
 * Major General Lemuel C. Shepherd, Jr.
 * Asst. Division Commander: Brigadier General William T. Clement
 * Chief of Staff: Colonel John C. McQueen
 * G-1: Major Addison B. Overstreet
 * G-2: Lt. Colonel Thomas B. Williams
 * G-3: Lt. Colonel Victor H. Krulak
 * G-4: Lt. Colonel August Larson (to 16 May), Lt. Colonel Wayne H. Adams
 * Left zone
 * 22nd_Marines_insignia.jpg 22nd Marine Regiment
 * Colonel Merlin F. Schneider (to 16 May), Colonel Harold C. Roberts (KIA 18 Jun), Lt. Colonel August Larson
 * 1st Battalion – Reserve (Maj. Thomas J. Myers (KIA 15 May), Maj. Earl J. Cook (WIA 17 Jun), Lt. Col. Gavin C. Humphrey)
 * 2nd Battalion – Green 1 (Lt. Col. Horatio C. Woodhouse, Jr. (KIA 30 May), Lt. Col. John G. Johnson)
 * 3rd Battalion – Green 2 (Lt. Col. Malcolm "O" Donohoo (WIA 16 May), Maj. George B. Kantner (to 19 May), Lt. Col. Clair W. Shisler)
 * Right zone
 * 4th_Marine_Regiment_Logo.png 4th Marine Regiment
 * Colonel Alan Shapley
 * 1st Battalion – Red 2 (Maj. Bernard W. Green, Lt. Col. Fred D. Beans, Lt. Col. George B. Bell)
 * 2nd Battalion – Red 1 (Lt. Col. Reynolds H. Hayden (to 26 May), Maj. Edgar F. Carney, Jr.)
 * 3rd Battalion – Reserve (Lt. Col. Bruno A. Hochmuth)
 * Reserve – Landed D-Day
 * 29th_Marine_Regiment.jpg 29th Marine Regiment
 * Colonel Victor F. Bleasdale (to 14 Apr), Colonel William J. Whaling
 * 1st Battalion (Lt. Col. Jean W. Moreau (WIA 16 May), Maj. Robert P. Neuffer (to 25 May), Lt. Col. Samuel S. Yeaton (to 14 Jun), Lt. Col. Leroy P. Hunt, Jr.)
 * 2nd Battalion (Lt. Col. William G. Robb (WIA 19 Apr))
 * 3rd Battalion (Lt. Col. Erma A. Wright (To 14 Jun), Lt. Col. Angus N. FraServ)
 * Artillery
 * Emblem_of_the_United_States_Marine_Corps.png 15th Marine Regiment (Artillery)
 * Colonel Robert B. Luckey
 * 1st Battalion (Maj. Robert H. Armstrong)
 * 2nd Battalion (Maj. Nat M. Pace)
 * 3rd Battalion (Lt. Col. Joe C. McHaney)
 * 4th Battalion (Lt. Col. Bruce T. Henphill)
 * Service troops
 * 6th Engineer Battalion (Maj. Paul F. Sackett)
 * 6th Medical Battalion (Cmdr. John S. Cowan, USN)
 * 6th Motor Transport Battalion (Lt. Col. Ernest H. Gould)
 * 6th Pioneer Battalion (Lt. Col. Samuel R. Shaw (to 10 May), Maj. John G. Dibble (to 8 Jun), Lt. Col. Samuel R. Shaw (to 18 Jun), Maj. John G. Dibble)
 * 6th Service Battalion (Lt. Col. George B. Bell (to 25 Apr), Lt. Col. Alexander N. Entringer)
 * 6th Tank Battalion (Lt. Col. Robert L. Denig, Jr.)



Right Beaches

 * US 1st Marine Division SSI.svg 1st Marine Division (26,274 officers and enlisted)
 * Major General Pedro A. del Valle
 * Asst. Division Commander: Brigadier General Louis R. Jones
 * Left zone
 * USMC_-_7th_Marine_Regiment_New_Logo.png 7th Marine Regiment
 * Colonel Edward W. Snedeker
 * 1st Battalion – Blue 2 (Lt. Col. John L. Gormley)
 * 2nd Battalion – Blue 1 (Lt. Col. Spencer S. Berger)
 * 3rd Battalion – Reserve (Lt. Col. Edward H. Hurst (WIA 19 Jun), Lt. Col. Stephen V. Sabol)
 * Right zone
 * 5th_Marine_Regiment_Logo.jpg 5th Marine Regiment
 * Colonel John H. Griebel
 * 1st Battalion – Yellow 2 (Lt. Col. Charles W. Shelburne)
 * 2nd Battalion – Yellow 1 (Lt. Col. William B. Benedict (to 20 Jun), Maj. Richard T. Washburn)
 * 3rd Battalion – Reserve (Maj. John H. Gustafson (WIA 1 Apr), Lt. Col. John C. Miller, Jr. (4 Apr to 16 May), Maj. Frank W. Poland (to 8 Jun), Jr., Lt. Col. Robert B. Hill)
 * Reserve
 * 1st_Marine_Regiment_Logo.png 1st Marine Regiment
 * Colonel Arthur T. Mason
 * 1st Battalion (Lt. Col. James C. Murray, Jr. (WIA 9 May), Lt. Col. Richard P. Ross, Jr. (to 12 May), Lt. Col. Austin C. Shofner)
 * 2nd Battalion (Lt. Col. James C. Magee, Jr.)
 * 3rd Battalion (Lt. Col. Stephen V. Sabol (to 20 May), Lt. Col. Richard P. Ross, Jr.)
 * Artillery
 * Cannoncockers11thMarReg.jpg 11th Marine Regiment (Artillery)
 * Colonel Wilburt S. Brown
 * 1st Battalion (Lt. Col. Richard W. Wallace)
 * 2nd Battalion (Lt. Col. James H. Mofatt, Jr.)
 * 3rd Battalion (Lt. Col. Thomas G. Roe)
 * 4th Battalion (Lt. Col. Leonard F. Chapman, Jr.)
 * Service troops
 * 1st Engineer Battalion (Maj. Theodore E. Drummond)
 * 1st Medical Battalion (Lt. Cmdr. Francis Giuffrida, USN))
 * 1st Motor Transport Battalion (Lt. Col. Marion A. Fawcett (to 15 Apr), Lt. Col. Calvin C. Gaines)
 * 1st Pioneer Battalion (Lt. Col. Robert G. Ballance)
 * 1st Service Battalion (Lt. Col. Calvin C. Gaines (to 17 Apr), Col. John Kaluf)
 * 1st Tank Battalion (Lt. Col. Arthur J. Stuart (WIA 13 Jun)
 * 3rd Armored Amphibian Battalion, Provisional (Lt. Col. John L. Williamson, Jr. (to 7 May), Maj. Arthur M. Parker, Jr.)
 * 1st Amphibian Tractor Battalion (Lt. Col. Maynard M. Nohrden)
 * 8th Amphibian Tractor Battalion (Lt. Col. Chalres B. Nerren (to 13 Apr), Maj. Bedford Williams (to 17 Apr), Lt. Col. Chalres B. Nerren)


 * 1st Provisional Antiaircraft Artillery Group
 * Colonel Kenneth W. Benner

Southern Landing Area
XXIV Army Corps Major General John R. Hodge

Embarked in Task Force 55 under Rear Admiral John L. Hall

Left Beaches



 * 7th Infantry division Shoulder Sleve insignia.png 7th Infantry ("Bayonet") Division (21,929 officers and enlisted)
 * Major General Archibald V. Arnold
 * Infantry
 * 17th Infantry Regiment – Purple Beaches
 * 32nd Infantry Regiment – Orange Beaches
 * 184th Infantry Regiment – Reserve
 * Artillery
 * 48th, 49th, 57th Field Artillery Battalions (105mm)
 * 31st Field Artillery Battalion (155mm)
 * Division troops
 * 7th Reconnaissance Troop (Mechanized)
 * 13th Engineer Combat Battalion
 * 7th Medical Battalion
 * 7th Counter Intel Corps Det

Right Beaches



 * 96th Infantry Division SSI.svg 96th Infantry ("Deadeye") Division (22,330 officers and enlisted)
 * Major General James L. Bradley
 * Infantry
 * 381st Infantry Regiment – White Beaches
 * 383rd Infantry Regiment – Brown Beaches
 * 382nd Infantry Regiment – Reserve
 * Artillery
 * 361st, 362nd, 921st Field Artillery Battalions (105mm)
 * 363rd Field Artillery Battalion (155mm)
 * Division troops
 * 96th Reconnaissance Troop (Mechanized)
 * 321st Engineer Combat Battalion
 * 321st Medical Battalion
 * 96th Counter Intel Corps Det



Reserve – Landed L+8

 * 27th_Infantry_Division_SSI.svg 27th Infantry ("New York") Division (16,143 officers and enlisted)
 * Major General George W. Griner, Jr.
 * Infantry
 * 105th Infantry Regiment
 * 106th Infantry Regiment
 * 165th Infantry Regiment
 * Artillery
 * 104th, 105th, 249th Field Artillery Battalions (105mm)
 * 106th Field Artillery Battalion (155mm)
 * Division troops
 * 27th Reconnaissance Troop (Mechanized)
 * 102nd Engineer Combat Battalion
 * 102nd Medical Battalion
 * 27th Counter Intel Corps Det

Western Islands (Ie Shima, etc.)



 * 77th Infantry Division.patch.jpg 77th Infantry ("Statue of Liberty") Division (20,981 officers and enlisted)
 * Major General Andrew D. Bruce
 * Embarked in Task Group 51.1 under Rear Admiral Ingolf N. Kiland


 * Infantry
 * 306th Infantry Regiment – landed Green Beach 17 Apr
 * 305th Infantry Regiment – landed Red Beaches 1 & 2 17 Apr
 * 307th Infantry Regiment – landed Red Beaches 3 & 4 17 Apr
 * One Marine BLT
 * Artillery
 * 304th, 305th, 902nd Field Artillery Battalions (105mm)
 * 306th Field Artillery Battalion (155mm)
 * Division troops
 * 77th Reconnaissance Troop (Mechanized)
 * 302nd Engineer Combat Battalion
 * 302nd Medical Battalion
 * 77th Counter Intel Corps Det

Air Forces

 * Tactical Air Force, Tenth Army
 * Major General Francis P. Mulcahy, USMC (to 11 Jun)
 * Major General Louis E. Woods, USMC (from 11 Jun)

Thirty-second Army
Lieutenant General Mitsuru Ushijima (seppuku 22 June) Approx. 67,000 men under arms, incl. 5,000 Okinawan conscripts
 * 24th Division
 * Lt. Gen. Tatsumi Amamiya (KIA 30 June)
 * 22nd Infantry Regiment
 * 32nd Infantry Regiment
 * 89th Infantry Regiment
 * 62nd Division
 * Lt. Gen. Takeo Fujioka (suicide 22 June)
 * 63rd Brigade
 * 67th Brigade
 * 44th Independent Mixed Brigade
 * Maj. Gen. Suzuki Shigeji (died 22 June)