Order of battle for the Japanese invasion of French Indochina
The Indochina Expedition order of battle in World War II Southeast Asia, Vichy Indochina versus Japan, 1940 and the Sino-Japanese Air War, from 1937–1945:
Japan
5th Division - Lt. Gen. Akihito Nakamura [1]
- 9th Infantry Brigade
- 11th Infantry Regiment
- 41st Infantry Regiment
- 21st Infantry Brigade
- 21st Infantry Regiment
- 42nd Infantry Regiment
- 5th Mountain Artillery Regiment
- 5th Cavalry Regiment
- 5th Engineer Regiment
- 5th Transport Regiment
Indochina Expeditionary Army - Major Gen. Takuma Nishimura [1]
- Indochina Expeditionary Infantry Group - Major Gen. Takeshi Sakurada
- 2nd Imperial Guards Infantry Regiment - Col. Kunio Osonoe
- Indochina Expeditionary Tank Unit (14th Tank Regiment)
- Indochina Expeditionary AA Gun Unit
- Signal Unit and others
IJAAF[4]
- 1st Hikodan Headquarters
- 59th Sentai, the
- 90th Sentai and some
- ground service units
- 3rd Hikoshidan Headquarters
- 18th I F Chutai
- 60th Sentai
- ground service units
Imperial Japanese Navy
2nd Fleet
IJN airforce: [4]
- Carrier Hiryū
- Fighter daitai - Mitsubishi A5M
- Bomber daitai - Aichi D1A2
- Attack daitai - Yokosuka B4Y1
- Seaplane tender Kamikawa Maru
- 4 Type 94 Kawanishi E7K2 “Alf” reconnaissance float biplanes
- 8 Type 95 Nakajima E8N2 “Dave” reconnaissance float biplanes
Japanese warships and transports carrying Expeditionary Force lying off Haiphong in the Gulf of Tonkin.
Vichy France[3]
Hanoi - Général de Corps d'Armée Maurice Martin
Haiphong
- shore defenses
Lang Son sector
- 2nd Brigade - Général de brigade Germain Mennerat
- five battalions of infantry:
- I/3rd Régiment de Tirailleurs Tonkinois (RTT)
- II/5th Régiment Ėtranger d'Infanterie (REI)
- I/9th Régiment d'Infanterie Coloniale (RIC)
- ?
- ?
- a group of tanks,
- a group of 75 mm artillery
- a battery of 155 mm artillery
- five battalions of infantry:
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:
- IV/3rd Régiment de Tirailleurs Tonkinois (RTT) - to counterattack toward Dong Dang
- "fresh battalions" - Lang Giai and Lang Nac barring the route from Lang Son to Hanoi