Sept. 17

Sept. 17, 1972: Hanoi releases three POWs.

http://www.history.com/this-day-in-history/hanoi-releases-three-pows

Sept. 16

Sept. 16, 1960: U.S. ambassador in Saigon: Situation worsening.

http://www.history.com/this-day-in-history/us-ambassador-in-saigon-warns-that-situation-is-worsening

Sept. 15

Sept. 15, 1972: South Vietnamese retake Quang Tri City.

http://www.history.com/this-day-in-history/south-vietnamese-forces-retake-quang-tri-city

Sept. 14

Sept. 14, 1965: South Vietnamese troops, U.S. advisers conduct parachute assault.

http://www.history.com/this-day-in-history/south-vietnamese-forces-and-us-advisers-conduct-parachute-assault

Sept. 13

Sept. 13, 1964: Coup attempt fails in South Vietnam.

http://www.history.com/this-day-in-history/attempted-coup-against-khanh-government-fails