Enquiry 4 By almaaaaz Nov 22, 1963 Lyndon B. Johnson elected as President 1964 OPLAN 34A Aug 7, 1964 The Gulf of Tonkin Resolution 1965 Operation Rolling Thunder 1965 vietcing attack on army barracks and US helicopter base in Pleiku Mar 8, 1965 US combat troops arrive at Danang Jul 28, 1965 75k US ground troops in Vietnam