The 1945–46 War in Vietnam, codenamed Operation Masterdom by the British, and also known as the Southern Resistance War by the Vietnamese, was a post–World War II armed conflict involving a largely British-Indian and French task force and Japanese troops from the Southern Expeditionary Army Group, versus the Vietnamese communist movement, the Viet Minh, for control of the southern half of the country, after the unconditional Japanese surrender. Wikipedia