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 Americans belonged to an immigrant generation, the Issei, and their US-born children to the Nisei Japanese American generation. The Issei comprised exclusively those who had immigrated before 1924. Because no new immigrants were permitted, all Japanese Americans born after 1924 were—by definition—born in the US. This generation, the Nisei, became a distinct cohort from the Issei generation in terms of age, citizenship, and English-language ability, in addition to the usual generational differences. Institutional and interpersonal racism led many of the Nisei to marry other Nisei, resulting in a third distinct generation of Japanese Americans, the Sansei. Significant Japanese immigration did not