The Indochina Expeditionary Army (印度支那派遣軍, Indoshina Hakengun) was an amphibious army corps of the Imperial Japanese Army formed on September 7, 1940 to coordinate the invasion and occupation of French Indochina during the Second Sino-Japanese War. It was supported by a contingent from the Imperial Japanese Navy's IJN 5th Fleet and naval aircraft from the aircraft carrier Hiryū and air bases on Hainan Island.