General Nguyen Khanh Seizes Power in Saigon:  In a bloodless coup, General Nguyen Khanh seizes power in Saigon.  South Vietnam junta leader, Major General Duong Van Minh, is placed under house arrest but is allowed to remain as a figurehead chief-of-state.

Gulf of Tonkin Incident:  On August 2, three North Vietnamese PT boats allegedly fire torpedoes at the USS Maddox, a destroyer located in the international waters of the Tonkin Gulf, some thirty miles off the coast of North Vietnam. The attack comes after six months of covert U.S. and South Vietnamese naval operations. A second, even more highly disputed attack is alleged to have taken place on August 4.

Debate on Gulf of Tonkin Resolution:  The Gulf of Tonkin Resolution is approved by Congress on August 7 and authorizes President Lyndon Johnson to “take all necessary measures to repel any armed attack against forces of the United States and to prevent further aggression.”  The resolution passes unanimously in the House and by a margin of 82-2 in the Senate.  The Resolution allows Johnson to wage all out war against North Vietnam without ever securing a formal Declaration of War from Congress.

Vietcong Attack Bien Hoa Air Base

LBJ Defeats Goldwater:  Lyndon Johnson is elected in a landslide over Republican Barry Goldwater of Arizona.  During the campaign, Johnson’s position on Vietnam appeared to lean toward de-escalation of U.S. involvement and sharply contrasted the more militant views held by Goldwater.