All the surviving children served in the military : some for the U.S. and some for Japan . Three were in the U.S. Army during World War II . Two who were left behind in Japan fought against the United States during the war . old Chikara `` Don '' Oka , a World War II veteran now living in a retirement home in Los Angeles . ` Two others stuck in Japan were too young to fight ; they served on U.S. side during Korean War .
All the surviving children served in the military : some for the U.S. and some for Japan . Three were in the U.S. Army during World War II . Two who were left behind in Japan fought against the United States during the war . Two others stuck in Japan were too young to fight ; they served on U.S. side during Korean War .