On April 30, 1975, the North Vietnamese Army conquered important sectors of Saigon in South Vietnam, ultimately taking over the capital and ending the Vietnam War when they raised their flag in the South Vietnamese palace.
The takeover was a surprise to the South Vietnamese and the American military who were informed by the CIA that they could hold out at least until 1976.
It didn’t take long for the South Vietnamese to surrender.
Saigon was later renamed Ho Chi Minh City after the communist North Vietnamese leader.
Prior to the city’s fall, American civilians and military personnel were evacuated by helicopter, Operation Frequent Wind — one of the largest helicopter evacuations in history.