The F-100D was widely used in Vietnam. Several F-100 aircraft initially stationed in the Philippines were deployed to Thailand in May of 1962 to try and restrain the Pathet Lao which were busily overrunning most of northwestern Laos. F-100s were stationed in South Vietnam beginning in February of 1964. The first combat strike by the F-100D was flown on June 9, 1964 when eight F-100Ds of the 615th Tactical Fighter Squadron flew strikes against targets in the Plaines des Jarres, Laos. The first recorded combat loss was an F-100D (56-3085), shot down on August 18, 1964 over Laos.