When the 3d Brigade was sent to Vietnam in response to the Tet Offensive in early 1968, 1-508th accompanied it. There it took part of the heavy fighting of Huế and the Tet counteroffensives. It was later awarded the Presidential Unit Citation. From 8 August 1962 to 26 June 1968, the lineage of Co C, 508 PIR was reactivated as HHC, 3-508th INF, and the unit served as an airborne battalion within the 193d Infantry Brigade in Panama. When the Airborne component of the battalion was reduced to a single company (Co A), the battalion was reflagged as the 3d Battalion, 5th Infantry.