The Japanese had invaded Tonkin and using available dense terrain undertook a vast maneuver of encirclement on either side of the fortified city of Lansgson, threatening to isolate it by cutting Colonial Road 1. The 11th Company, 3rd Battalion of the 9th Infanterie Coloniale Regiment took position in front of the village of Mai Pha and the Japanese soon attacked to complete the isolation of Langson. . .
Attacker: Japanese (5th Infantry Division, Army of Canton)