Three battalions, the 1st, 2nd and 5th, served during the Vietnam War as the 3rd Brigade of the 1st Cavalry Division. 3rd Brigade often referred to itself as the "Garryowen Brigade". These troopers were armed with the new M16 rifle, M1911A1 Pistols and the M79 grenade launcher. The use of Bell UH-1 Iroquois "Huey" helicopters transformed the 1st Cavalry into an "Air-mobile" unit. Seven men earned the Medal of Honor while serving with the 7th Cavalry in Vietnam: Private First Class Lewis Albanese, Company B, 5th Battalion; First Lieutenant Douglas B. Fournet, Company B, 1st Battalion; Sergeant John Noble Holcomb, Company D, 2nd Battalion; Second Lieutenant Walter Joseph Marm, Jr., Company A, 1st Battalion; Private First Class William D. Port, Company C, 5th Battalion; Specialist Four Hector Santiago-Colon, Company B, 5th Battalion; and First Lieutenant James M. Sprayberry, Company D, 5th Battalion.[12][13]