The 229th Aviation Regiment is an aviation unit of the United States Army. The unit was constituted on 18 March 1964 in the Regular Army as the 229th Assault Helicopter Battalion, an element of the 11th Aviation Group, 11th Air Assault Division (Test) and activated on 19 March 1964 at Fort Benning, Georgia. It was redesignated on 1 July 1965 as the 229th Aviation Battalion, an element of the 1st Cavalry Division (Airmobile), when the assets of the 11th Air Assault Division (Test) and the 2d Infantry Division were merged and reflagged as the 1st Cavalry Division (Airmobile). The 229th Aviation Battalion (Assault Helicopter) took part in the Vietnam War and remained behind when the 11th Aviation Group departed with the bulk of the division, providing support to the 3d Brigade, 1st Cavalry Di