Infantry Brigade remained at Pierrepont, New York until 1 June 1940, when they returned to Fort Ontario; the 2nd Infantry Brigade was inactivated on the same day. After the army's conversion to the triangular division, only two separate brigades were formed during World War II, the 1st Airborne Infantry Brigade and the 2nd Airborne Infantry Brigade both formed in 1943. The 2nd Airborne Infantry Brigade was formed at Camp Mackall, North Carolina on 20 June 1943 and included the 507th Parachute Infantry Regiment and the 508th Infantry Regiment. Order of battle Headquarters and Headquarters Company (HHC) 507th Parachute Infantry Regiment (507th PIR) 508th Parachute Infantry Regiment (508th PIR) The 2nd Airborne Brigade deployed to Northern Ireland in January 1944 under the command of Brigadier General George Howell. In order to increase the strength of Major General Matthew Ridgway's 82nd "All American" Airborne Division that had one of its regiments (the 504th Parachute Infantry) still deployed in Italy, the 2nd Brigade had its two regiments assigned to the 82nd, the Headquarters and Headquarters Company (HHC) also transferring to the 82nd. The 2nd Airborne Brigade was disbanded on 15 January 1945 in Europe. Cold War On 15 February 1958 the 2nd Infantry Brigade was re-activated at Fort Devens, Massachusetts as the Pentomic 2nd Infantry Brigade with its own shoulder sleeve insignia. It spent the next five years training in northern Massachusetts and Cape Cod. The Brigade was prepared to support the Marines landing in the 1958 Lebanon crisis but did not deploy. Order of battle Headquarters and Headquarters Company (HHC) 1st Battle Group, 4th Infantry 2nd Battle Group, 60th Infantry 1st Battalion, 76th Artillery Company F, 34th Armor Company G, 34th Armor Troop F, 5th Cavalry Brigade Trains 2 Engineer Companies It was inactivated on 19 February 1963 at Fort Devens; in 1962 when it was reflagged as 2nd Brigade, 5th Infantry Division. It was reactivated on 23 October 1963 as Headquarters and Headquarters Company, 2nd Brigade, 1st Infantry Division and moved (with the rest of the Division) to Fort Riley, Kansas in January 1964. Vietnam On 12 July 1965, the 2nd Brigade landed at Cam Ranh Bay and Vũng Tàu, making it the first element of an Infantry Division to arrive in Vietnam. On 30 July 1969, the unit was visited by President Richard Nixon on his visit to South Vietnam. He met with the troops in Di An. The brigade