The 155th arrived in Vietnam in 1965 as A Company, 1st Aviation Battalion, 1st Infantry Division. They were located on the west side of Ban Me Thuot at Camp Coryell, named in honor of WO Coryell who was shot down and killed in October 1966. The 155th quickly distinguished themselves as they supported a changing variety of US and ARVN units in the II Corps area.  In a one-month period, they were deployed in all four Corps areas.  In November ‘65 the unit was renamed the 155th Aviation Company (Airmobile Light), of the 52nd Avn Bn.  On Thanksgiving Day ‘66, they supported Project Omega (B-50) for the first time.