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 settlement in the Marshall Islands on a Burns Philp steamer noted that the most Marshallese women wore the kimono instead of the traditional loincloth ("lavalava" in Marshallese) in October 1918. Interethnic relations between the Japanese settlers and civil servants with the Marshallese were friendly, but racial segregation was enforced between Japanese and Micronesians in the workforce and educational sectors. As compared to Micronesians from other islands, Marshallese generally retained more aspects of their traditional lifestyles, relative to the small Japanese populace in the islands. Contrary to Japanese settlements in the other mandated islands, settlers consisted mainly of single men, and intermarriages with Marshallese women were