Units Involved

1945-04-01 00:00:00 UTC - 1945-06-22 00:00:00 UTC
Attackers: United States, United Kingdom, Canada, New Zealand, Australia
Defenders: Japan
Outcome: Allied Forces victory

The Battle of Okinawa, codenamed Operation Iceberg,[17] was a major battle of the Pacific War fought on the island of Okinawa by United States Marine and Army forces against the Imperial Japanese Army.[18] The initial invasion of Okinawa on April 1, 1945, was the largest amphibious assault in the Pacific Theater of World War II.[19][20] The 82-day 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.