On 18 July 1965, the 333rd Air Base Squadron was redesignated the 6232nd Combat Support Group (CSG). This unit reported directly to the Commander, 13th Air Force and to the 6234th Tactical Fighter Wing (TFW) at Korat Royal Thai Air Force Base, at that time the only tactical wing in Thailand.The formation of the group at Udon RTAFB was brought about because of expanding Air Force programs., an increase in assigned personnel and increased base support requirements. The majority of personnel at Udon RTAFB, prior, to the formation of the group, were temporary duty assignments.