635th Combat Support Group

The 635th Combat Support Group was an active United States Air Force unit, primarily stationed at U-Tapao Royal Thai Navy Airfield, Thailand, during the Vietnam War. Activated in 1966, the group provided essential base support, security, and logistical services to enable the operations of Strategic Air Command bomber and tanker missions in Southeast Asia. The 635th played a vital role in sustaining air operations, handling everything from civil engineering and supply to communications and medical care for deployed personnel. The group was inactivated in 1976 as the US military presence in Thailand was reduced following the end of American involvement in Vietnam.