Operation Kentucky was a multi-battalion operation conducted by the United States Marine Corps in the area south of the DMZ in Quảng Trị Province. This was another operation to secure the Con Thien area from the People's Army of Vietnam (PAVN). The operation ran from 1 November 1967 until 28 February 1969.

Con Thien was a military base that started out as a U.S. Army Special Forces camp before transitioning to a United States Marine Corps combat base. It was located near the Vietnamese Demilitarized Zone (DMZ) about 3 kilometers (1.9 mi) from North Vietnam in Gio Linh District, Quảng Trị Province. It was the site of fierce fighting from February 1967 through February 1968.