5:77th Armor Battalion

The 5th Battalion, 77th Armor Regiment (5/77th Armor Battalion) traces its lineage to the 77th Tank Battalion, activated in 1941. The unit saw action in World War II and was later reorganized under the 77th Armor Regiment. During the Vietnam War, the 5/77th Armor served as part of the 1st Brigade, 5th Infantry Division (Mechanized), providing armored support in the challenging terrain of Quang Tri Province from 1968 to 1971. The battalion distinguished itself in combat operations, earning commendations for its actions before its inactivation in the early 1970s.