Franco-Thai War
The Japanese occupation of Cambodia () was the period of Cambodian history during World War II when the Kingdom of Cambodia was occupied by the Japanese. Vichy France, who were a client state of Nazi Germany, nominally maintained the French protectorate over Cambodia and other parts of Indochina during most of the Japanese occupation. This territory of Cambodia was reduced, by concessions to Thailand after the Franco-Thai War, so that it did not include Stung Treng Province, Battambang Province, and Siem Reap Province.