Japanese air attacks on the Mariana Islands and anti-aircraft guns shot down about 37 Japanese aircraft during these raids. After the Marianas began to come under attack, the United States military stepped up its raids on the Japanese-held islands which could be used to launch raids on the B-29 bases. Particular attention was given to Iwo Jima, as it was correctly assumed that the Japanese aircraft which attacked the Marianas were flying from Japan and staging through the island en route to their targets. Following the first raid against Saipan in November, XXI Bomber Command B-29s were dispatched against Iwo Jima's airfields on November 5 and 8.
Okinawa Island During this 82-day-long battle, about 95,000 Imperial Japanese Army troops and 12,510 Americans were killed. The Cornerstone of Peace at the Okinawa Prefecture Memorial Peace Park lists 149,193 persons of Okinawan origin – approximately one quarter of the civilian population – who either were killed or committed suicide during the Battle of Okinawa and the Pacific War. During the American military occupation of Japan (1945–52), which followed the Imperial Japanese surrender on September 2, 1945, in Tokyo Bay, the United States controlled Okinawa Island and the rest of the Ryukyu Islands. The Amami Islands were returned to Japanese control in