

The IJN and IJA did not formally use joint/combined staff at the operational level, and their command structures/geographical areas of operations overlapped with each other and those of the Allies.

The General Staff (参謀本部 Sanbō Honbu) of the Imperial Japanese Army (IJA) was responsible for Imperial Japanese Army ground and air units in Southeast Asia and the South Pacific. Yamamoto was succeeded by Admiral Mineichi Koga (1943–44) and Admiral Soemu Toyoda (1944–45). The Rengō Kantai was led by Admiral Isoroku Yamamoto, until he was killed in an attack by U.S. Most Japanese forces in the theater were part of the Combined Fleet (連合艦隊 Rengō Kantai) of the Imperial Japanese Navy (IJN), which was responsible for all Japanese warships, naval aircraft, and marine infantry units.

We are a new server, looking for new people. The Pacific Ocean theater, during World War II, was a major theater of the war between the Allies and the Axis.
