The Battle of Okinawa was the largest amphibious assault in the Pacific Theater of World War II. The 82 day long battle lasted from early April until mid-June, 1945, culminating in an Allied victory and occupation of the island.
It was the last major campaign of the Pacific War. More ships were used, more troops put ashore, more supplies transported, more bombs dropped, more naval guns fired than any other operation in the Pacific.
The battle was also one of the deadliest of any World War II engagement. The Japanese lost over 100,000 troops, the Allies suffered more than 50,000 casualties, with more than 12,000 killed in action, while hundreds of thousands of civilians were killed, wounded or committed suicide Approximately one-quarter of the civilian population died due to the invasion.
The main objective of the operation was to seize a large island only 340 miles away from mainland Japan which could serve as a springboard for the planned invasion of the islands. Although hastily converted to a base for air operations, the atomic bombings of Hiroshima and Nagasaki and the Soviet Union’s formal declaration of war against Japan caused Japan to surrender just weeks after the end of the fighting at Okinawa, and the invasion never took place.