Vietnamjha By ajha Mar 3, 1954 Dien Bien Phu Begins May 7, 1954 Dien Bien Phu Ends May 9, 1959 Creation Of The Ho Chi Minh Trail Dec 11, 1961 United States Becomes Actively Involved Feb 5, 1962 Operation Rangeland Jul 30, 1964 Gulf of Tonkin Attack Aug 7, 1964 Gulf of Tonkin Resolution Mar 2, 1965 Operation Rolling Thunder Begins Apr 7, 1965 U.S. offers peace for economic aid proposal Aug 17, 1965 First major battle of Vietnam War for American Units Nov 22, 1966 President Johnson commits over 60,000 troops to Vietnam Dec 10, 1966 American forces total 385,000 Feb 21, 1967 Operation Junction City Jan 21, 1968 Khe Sanh attacked by Vietcong Jan 30, 1968 Tet Offensive begins Mar 16, 1968 My Lai massacre Nov 11, 1968 Operation Rolling Thunder ends Jan 20, 1969 Nixon takes office Mar 18, 1969 Operation Menu Jun 17, 1971 Spraying of Agent Orange ends Jan 1, 1972 All but 133,000 U.S. troops have come home Dec 13, 1972 Peace talk breaks down Jan 8, 1973 Peace talks resume Jan 27, 1973 Cease fire signed Aug 9, 1974 Nixon resigns Apr 30, 1975 Last Casualties for the U.S. and final evacuation