The Vietnam War lasted from 1954 to 1975 and consisted of three phases. Phase 1 was a war of independence against the French which ended in French defeat in 1954. This led to the partitioning of Vietnam into communist North Vietnam and democratic South Vietnam. Phase 2 saw escalating American military involvement under presidents Kennedy and Johnson following the Gulf of Tonkin Incident. Despite escalation, the US struggled against Vietnamese guerrilla forces. Phase 3 was the Vietnamese Civil War from 1973-1975, which resulted in a final North Vietnamese victory and reunification of Vietnam under communist rule.