This is the order of battle for the Japanese invasion of French Indochina (22–26 September 1940) during World War II.
5th Division – Lt. Gen. Aketo Nakamura [1] Indochina Expeditionary Army – Maj. Gen. Takuma Nishimura [1] Army Air Force 2nd Fleet IJN airforce: [4] Japanese warships and transports carrying Expeditionary Force lying off Haiphong in the Gulf of Tonkin.
Hanoi – Général de Corps d'Armée Maurice Martin Haiphong Lang Son sector That Khe – 1 company of II/3rd Régiment de Tirailleurs Tonkinois (RTT) Nam Quam – 2 companies of II/3rd Régiment d'Infanterie Coloniale (RIC) Chima – 1 Platoon of a company of II/3rd Régiment de Tirailleurs Tonkinois (RTT) Loc Binh – bulk of a company of II/3rd Régiment de Tirailleurs Tonkinois (RTT) Na Dzuong – elements of 9th Régiment d'Infanterie Coloniale (RIC) All told, about 5000 troops representing elements of 3rd Régiment de Tirailleurs Tonkinois, 9th Régiment d'Infanterie Coloniale, and 5th Régiment Étranger d'Infanterie.
Reserves: This French aerial order of battle is based on Christian-Jacques Ehrengardt, "Ciel de feu en Indochine, 1939–1945", Aéro Journal, 29, 1 (2003), pp.
The exact number of Potez 25 is unknown; there were around seventy.