 Transferred to Marine Corps Base Camp Lejeune, North Carolina, he was assigned duty as ammo-carrier with Company E, 2nd Battalion, 6th Marines, 2nd Marine Division until November 1965.While stationed at Camp Lejeune, he was promoted to lance corporal on October 1, 1964, and to corporal on August 1, 1965.In November, Corporal Singleton returned to the Marine Corps Recruit Depot at Parris Island and served as an instructor with the Weapons Training Battalion, Recruit Training Regiment, with the additional duty of training marksmanship to midshipmen at the U.S.