The "Red Team" had arrived in Vietnam. Interesting that they arrived in three units, each reporting to separate divisions. Elements of "E" Battery, 82nd Artillery, 1st Cavalry Division (Airmobile) began arriving in Vietnam in August 1965. The 3rd Battalion, 82nd Artillery, 23rd Infantry Division (Americal Division) arrived in Vung Tau, Vietnam on 15 August 1966. The 1st Battalion, 82nd Field Artillery, 23rd Infantry Division (Americal Division) arrived in October 1968.
Organic to the DIVARTY, the mission of "E" Battery was to provide Aerial reconnaissance, tracking of artillery fire and command liaison for the 1st Cavalry Division, with auxiliary functions of aerial surveillance, resupply of artillery elements, personnel and medical airlift. By 30 September, "Echo" Battery pilots had logged 359 hours in 382 missions utilizing primarily OH-13 observation helicopters. At that time their asset inventory included four UH-1B helicopters.
On December 1965, the use of fixed wing aircraft in Operation "Clean House", led the battery to request permanent assignment of airplanes to the unit. In 1966, the battery continued to serve as the eyes of the artillery and to provide transport for DIVARTY and battery officers. In response to the request for fixed wing aircraft, O-1 "Bird Dogs", gave the batteries new capabilities as high flying observers to adjust the strike of distant artillery guns".