The Imperial General Headquarters was the supreme command for Japanese military forces during the World War II era.

Organization of the Imperial Japanese Army -- December 8, 1941

The majority of these troops were stationed in China, Indochina, Japan, Formosa, Korea, and Manchuria. Only a fraction of Japan's military would be available for the December 1941 operations in southeast Asia and the Pacific. This includes some 61 divisions, 59 cavalry brigades, and 51 air squadronss.

  • Imperial General Headquarters
    • General Defense Command
    • China Expeditionary Force
    • North China Theater Army
    • Kwantung Theater Army
    • Southern Expeditionary Army
    • Other
      • 4th Infantry Division
      • 1st Army Hospital
      • 2nd Army Hospital
      • 3rd Army Hospital
      • Korean Remount Department
      • Airforce Transport Department
      • IGHQ

Composition of the Japanese Army -- December 1941

See also:

US Navy Department, US War Department, Supreme Allied Headquarters