The Battle of Phước Long was a decisive battle of the Vietnam War which began on December 12, 1974, and concluded on January 6, 1975. The battle involved the deployment of the People's Army of Vietnam (PAVN) 4th Army Corps for the first time, against determined units of the Army of the Republic of Vietnam (ARVN) in Phước Long in Bình Phước Province near the Cambodian border (to be distinguished from the other Phước Long in Bạc Liêu Province, south of Saigon), under the command of Lieutenant General Dư Quốc Đống.