Japanese air attacks on the Mariana Islands 27 in preparation for operations against Japan itself. The USAAF bases in the Mariana Islands were within range of a number of Japanese air bases in the Pacific. These included Wake Island to the east, Truk and the Gilbert and Marshall Islands to the southeast, Woleai to the south and Yap to the southwest. To the north the Japanese had air bases in the Nampo Shoto chain of islands and Bonin Islands, which included three airstrips on Iwo Jima. Several of the minor islands in the Mariana chain also remained in Japanese hands, and there were airfields on Rota and
Japanese occupation of the Andaman Islands objective on the islands was the city of Port Blair. The garrison consisted of a 300-man Sikh militia with 23 British officers, augmented in January 1942 by a Gurkha detachment of 4/12th Frontier Force Regiment of the 16th Indian Infantry Brigade. Following the fall of Rangoon on March 8, however, the British recognized that Port Blair had become impossible to defend, and on March 10 the Gurkhas were withdrawn to the Arakan peninsula. The Japanese, seeking to secure their seaward flank, dispatched a force to seize the islands. The force was composed of the following units and ships: Distant Cover<br>