year 1963 saw her complete a successful WestPac deployment and another rigorous schedule of training operations. Departing San Diego on 28 January 1964 for her fourth WestPac deployment en route to Pearl Harbor Paul Revere participated in "Coco Palm", a merchant convoy sailing exercise. From Pearl Harbor she sailed to Buckner Bay in preparation for one of the largest amphibious operations since the end of World War II. This exercise, called "Back Pack", involved over 50,000 American and Nationalist Chinese personnel and over 125 ships. It was conducted off the southwestern coast of Taiwan and terminated on 12 March. Paul Revere also participated in "Ligtas", a combined SEATO exercise in the Philippines during May, and operation "Minute Hand", conducted at Numazu, Japan in July. While returning to the states in August 1964 USS Turner Joy and USS Maddox were fired upon by North Vietnamese vessels in the Gulf of Tonkin. Paul Revere was turned around and went back to Okinawa and picked up 2,500 Marines and sailed for Vietnam. She went up the Saigon River to aid in the salvage of . Returning to the United States, she joined another convoy exercise, "Mad Bull", and arrived San Diego in October. Vietnam, 1964–1972 Paul Revere spent the first seven months of 1965 conducting training operations off the coast. In August it lifted elements of the 1st Marine Division to Okinawa and during October and November it transported personnel of South Korea's Tiger Division to Qui Nhon, South Vietnam from Pusan. From 7–18 November it conducted its first actual combat assault as a unit involved in Operation Blue Marlin, with Marine battalions embarked. The ship was involved in a similar operation called Operation Double Eagle at Quảng Ngãi Province, landing the 3rd Battalion, 1st Marines, 1st Marine Division, on 28 January 1966. It continued lift support for Marine units in Vietnam through March and then returned to San Diego on 19 April. Personnel aboard Paul Revere were eligible for hostile fire pay for the months of November 1965 as well as January and February 1966. Paul Revere resumed coastal operations on its return, until May 1967 when it again deployed to the Far East. As a unit of the Amphibious Ready Group (ARG) off the coast of Vietnam it engaged in operations "Belt Drive", "Fortress Sentry", "Formation Leader" and "Knox". The ship returned to San Diego on 16 December and commenced coastal