U.S. forces launch last major American operation of the war - Sep 05, 1970 - HISTORY.com

The 101st Airborne Division (Airmobile), in coordination with the South Vietnamese (ARVN) 1st Infantry Division, initiates Operation Jefferson Glenn in Thua Thien Province west of Hue. This operation lasted until October 1971, and was one of the last major large-scale military operations in which U.S. ground forces would take part.

President Nixon had begun his Vietnamization program in the summer of 1969; the objective was to increase the combat capability of the South Vietnamese forces so that they could assume responsibility for the war against the Viet Cong and the North Vietnamese forces as U.S. combat units were withdrawn and sent home. Shortly after the completion of Jefferson Glenn, the 101st Airborne began preparations to depart South Vietnam and subsequently began redeployment to the United States in March 1972.