In World War II, the Chief of General Staff, the Second Chief of General Staff and the Minister of Naval Operations were the chief officers and abbots. The ministers of the army and navy are nominally the chief of the base camp, but in fact, the chief of staff, the army staff and the navy staff are responsible for the actual work. It consists of military attache, military internal affairs bureau, station director department, transportation and communication department, field supervision department, field health department and management department. After the outbreak of the Pacific War, the staff room and the intelligence room command were added, among which the intelligence room command consisted of army courses and naval courses.