Ermey then served in Marine Wing Support Group 17 at Marine Corps Air Station Futenma in Okinawa, Japan. In 1968, he was ordered to South Vietnam with MWSG-17, and spent 14 months in-country. The remainder of his service was on Okinawa, where he was advanced to staff sergeant (E-6). He was medically retired in 1972 because of several injuries. On May 17, 2002, he received an honorary promotion to gunnery sergeant (E-7) by the Commandant of the Marine Corps, General James L. Jones.