This document provides context and background on the fall of Saigon in April 1975 when South Vietnam surrendered to North Vietnamese forces. It describes how North Vietnamese forces advanced and captured major cities in South Vietnam leading up to the capture of Saigon. As the North Vietnamese forces approached Saigon, the U.S. initiated evacuations of American civilians and South Vietnamese refugees. On April 30th, 1975, North Vietnamese forces captured Saigon, effectively ending the Vietnam War and reunifying Vietnam under communist rule.