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.
Japanese in Chicago the war, the number of ethnic Japanese increased to 20,000. Unlike on the west coast, the Japanese had freedom of movement and could work. Japanese worked in factories making materials to support the war, including aircraft and electronics. The Japanese Americans in Chicago largely relied on each other and avoided support from civic organizations, church organizations, and the WRA. Charlotte Brooks, author of "In the Twilight Zone between Black and White: Japanese American Resettlement and Community in Chicago, 1942-1945," wrote that Chicagoans did not perceive the Japanese-Americans as being "Japanese", but rather as non-White, and being "Orientals" but not black.