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 occupation of the Andaman Islands Colonel Bucho, whilst a number of junior Indian officials in the administration were elevated to more responsible posts. The defence of the islands was assigned to the newly formed fighter squadron of the Kanoya Kōkūtai based at Tavoy in southern Burma. This fighter squadron was the former "Yamada Unit" under the control of the 22d Koku Sentai, then based at Penang. Six flying boats from the Toko Kōkūtai were dispatched on March 26, with twelve more arriving shortly thereafter. Within the islands a Japanese garrison of approximately 600 men, together with the police force, now under Japanese control, were responsible