The 4th Battalion, 77th Artillery Regiment (4/77 ARA) was originally constituted during World War II as part of the United States Army. Over its history, the unit has undergone several activations, inactivations, and redesignations, reflecting the evolving needs of the Army’s field artillery capabilities. Most notably, 4/77 ARA served as an Aerial Rocket Artillery battalion with the 101st Airborne Division during the Vietnam War, providing critical fire support with helicopter-mounted rocket systems. The unit earned distinction for its valor and effectiveness in combat operations, contributing significantly to air mobile artillery tactics before its eventual inactivation.
