Kammala jumla mai zuwa: An kafa Brigade na Amphibious na 1 a ranar 16 ga Nuwamba 1943 a karkashin jagorancin Laftanar Janar Yoshimi Nishida daga IJA 3rd Independent Garrison Unit da ke Manchukuo. A tsakiyar Disamba 1943, brigade ya shiga jirgi kuma ya isa jim kaɗan bayan haka a Truk, inda aka sanya shi a ƙarƙashin IJN 4th Fleet. Babban Ofishin Janar na Imperial ya sanya shi zuwa Eniwetok don magance mamayewar Allied da ake tsammani: duk da haka, brigade ya ɓace a cikin nutsewar "Aikoku Maru" a Truck a ranar 17 ga Fabrairu 1944 yayin Operation Hailstone. Sauran mutane 800, ciki har da Laftanar Janar Nishida sun hallaka a lokacin yakin.
Yaƙin Eniwetok daga 17 zuwa 23 ga Fabrairu 1944 da Sojojin Ruwa na Amurka. An aika da sauran maza da sufuri zuwa Palau kuma an haɗa su a cikin IJA 53rd Independent Mixed Brigade a watan Mayu 1944.