Ho Chi Minh led the Vietminh movement to gain independence for Vietnam from France in the 1940s and 1950s. After World War II, Ho Chi Minh appealed to the United States for support against the returning French colonial forces. However, as the Cold War escalated, the US began supporting France and later directly intervened in Vietnam due to fears of communist expansion. Guerrilla tactics played a major role in the Vietnamese resistance, including booby traps, poisoned weapons, and an extensive tunnel network for hiding and transportation.