 Initially conducted by the 101st Airborne Division and 1st Cavalry Division, Wheeler/Wallowa it was progressively taken over by 23rd Infantry (Americal) Division.Some of the Tiger Force killings took place during the operation.Operation Wheeler/Wallowa was launched as part of the operations conducted by Task Force Oregon, a multi-brigade force of the U.S. Army, made up of the 1st Brigade, 101st Airborne Division; and the 3rd Brigade, 25th Infantry Division, with its headquarters at Chu Lai Base Area.