From 1973 to 1974, Lt. Col. Beckwith served as commander, Control Team "B" with the Joint Casualty Resolution Center (JCRC) located at RTAFB Nakhon Phanom, Thailand. Under the Command of BG Robert C. Kingston, USA, JCRC's sole mission was to assist the Secretaries of the Armed Services to resolve the fate of servicemen still missing and unaccounted for as a result of the hostilities throughout Indochina. JCRC had a predominantly operational role—the carrying out of field search, excavation, recovery, and repatriation activities. He was promoted to Colonel and in 1975 returned to Fort Bragg, North Carolina as the Commandant of the U.S. Army Special Warfare School.