In which war did Operation Undertone, a large assault by the US and French Armies and the Battle of Mindanao, fought by the US and allied Filipino guerrillas take place?
Operation Undertone Operation Undertone was a large assault by the U.S. Seventh and French 1st Armies of the U.S. Sixth Army Group as part of the Allied invasion of Germany in March 1945 during World War II.
First Indochina War The First Indochina War (generally known as the Indochina War in France, and as the Anti-French Resistance War in Vietnam) began in French Indochina on 19 December, 1946, and lasted until 1 August, 1954. Fighting between French forces and their Viet Minh opponents in the south dated from September 1945. The conflict pitted a range of forces, including the French Union's French Far East Expeditionary Corps, led by France and supported by Emperor Bảo Đại's Vietnamese National Army against the Viet Minh, led by Ho Chi Minh and the People's Army of Vietnam led by Vo Nguyen Giap. Most of the fighting took place in Tonkin in northern Vietnam, although the conflict engulfed the entire country and also extended into the neighboring French Indochina protectorates of Laos and Cambodia.