대본영
The Japanese 5th Area Army was formed on March 16, 1944 under the General Defense Command as part of the last desperate defense effort by the Empire of Japan to deter possible landings of Allied forces in Hokkaidō, Karafuto/South Sakhalin and the Chishima Islands/Kuriles during Operation Downfall (or in Japanese terminology). It remained directly under the Imperial General Headquarters and was headquartered in Sapporo. The 5th Area Army leadership also held equivalent posts in the Northern District Army, and had the honor of receiving their appointments personally from Emperor Hirohito rather than the Imperial General Headquarters.