Second Battle of Quảng Trị
The Second Battle of Quang Tri (also called Operation "Lam Son 72") () began on 28 June 1972 and lasted 81 days until 16 September 1972, when South Vietnam's Army of the Republic of Vietnam (ARVN) defeated the North Vietnamese People's Army of Vietnam (PAVN) at the ancient citadel of Quảng Trị () and recaptured most of Quảng Trị Province.