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Battle of Okinawa
Part of the Pacific Theater of World War II
Two Marines from the 2nd Battalion, 1st Marines advance on Wana Ridge on 18 May 1945.
US Marine from the 2nd Battalion, 1st Marines on Wana Ridge provides covering fire with his Thompson submachine gun, May 18, 1945.
Date April 1 – June 22, 1945
Location Okinawa, Ryukyu Islands, Japan
26°30′N 128°00′E / 26.5°N 128°E / 26.5; 128Coordinates: 26°30′N 128°00′E / 26.5°N 128°E / 26.5; 128
Result Allied victory
Territorial
changes
Okinawa occupied by the United States until 1972
Belligerents
Ground Forces:
 United States
Naval Support:
United States United States
 United Kingdom
 Canada
 New Zealand
 Australia
 Japan
Commanders and leaders
Simon Bolivar Buckner Jr. 
Roy Geiger
Joseph Stilwell
Chester W. Nimitz
Raymond A. Spruance
William Halsey, Jr.
Sir Bernard Rawlings
Mitsuru Ushijima 
Isamu Chō 
Hiromichi Yahara (POW)
Minoru Ōta 
Seiichi Itō 
Units involved

Ground units:
US Tenth Army SSI.svg Tenth Army

Naval units:
United States Fifth Fleet insignia 2006.png Fifth Fleet

Ground units:
Empire of Japan Thirty-Second Army



Naval units:
2nd Fleet
Combined Fleet
Strength
541,000 in Tenth Army
183,000 combat troops rising to c. 250,000
86,000 Japanese soldiers,
20,000 Okinawan conscripts
Casualties and losses
United States American

Personnel:
20,195 dead

  • 12,520 killed in action
55,162 wounded
Material:
12 destroyers sunk
15 amphibious ships sunk
9 other ships sunk
386 ships damaged
763-768 aircraft
225 tanks
Empire of Japan Japanese
Personnel:
From 77,166 killed to 110,000 killed (US estimate)
More than 7,000 captured
Material:
1 battleship sunk
1 light cruiser sunk
5 destroyers sunk
9 other warships sunk
1,430 aircraft lost
27 tanks destroyed
743 artillery pieces, anti-tank guns, and anti-aircraft guns
40,000–150,000 civilians killed out of some est.300,000
Battle of Okinawa is located in Japan
Battle of Okinawa
Location within Japan

Ground units:
US Tenth Army SSI.svg Tenth Army

Naval units:
United States Fifth Fleet insignia 2006.png Fifth Fleet

Ground units:
Empire of Japan Thirty-Second Army

Personnel:
20,195 dead

The Battle of Okinawa (Japanese: 沖縄戦?, Hepburn: Okinawa-sen) (Okinawan: 沖縄戦, translit. Uchinaa ikusa), codenamed Operation Iceberg, was a series of battles fought in the Japanese Ryukyu Islands, centered on the island of Okinawa, and included the largest amphibious assault in the Pacific War during World War II, the April 1, 1945 invasion of Okinawa itself. The 82-day-long battle lasted from April 1 until June 22, 1945. After a long campaign of island hopping, the Allies were planning to use Okinawa, a large island only 340 mi (550 km) away from mainland Japan, as a base for air operations for the planned invasion of the Japanese home islands.


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