He was promoted to colonel on September 22, 1965. Transferred to the 2nd Marine Division, Marine Corps Base, Camp Lejeune, North Carolina, Colonel Barber served consecutively as division plans officer, assistant chief of staff, G-2 (Intelligence), and commanding officer of the 2nd Marine Regiment from 19 February 1968 to 13 May 1969. Vietnam War In 1969, he was ordered to Vietnam, where he served his last tour of active duty as Psychological Operations Officer, III Marine Amphibious Force, Military Assistance Command, Vietnam. For his service in this capacity, he was awarded the Legion of Merit with Combat "V." Retirement Colonel Barber retired from active duty on May 1, 1970. He then became a civilian-military analyst for the Northrop Corporation. Barber died at his home in Irvine, California, on April 19, 2002, of bone marrow cancer and he was buried at Arlington National Cemetery. Military awards Barber's decorations and awards include: Medal of Honor citation For his actions at the Chosin Reservoir, Korea from November 28, to December 2, 1950, Barber was awarded the Medal of Honor. His citation reads: The President of the United States in the name of The Congress takes pleasure in presenting the MEDAL OF HONOR to for service as set forth in the following CITATION: For conspicuous gallantry and intrepidity at the risk of his life above and beyond the call of duty as Commanding Officer of Company F, Second Battalion, Seventh Marines, First Marine Division (Reinforced), in action against enemy aggressor forces in Korea from November 28, to December 2, 1950. Assigned to defend a three-mile mountain pass along the division's main supply line and commanding the only route of approach in the march from Yudam-Ni to Hagaru-ri, Captain Barber took position with his battle weary troops and, before nightfall, had dug in and set up a defense along the frozen snow-covered hillside. When a force of estimated regimental strength savagely attacked during the night, inflicting heavy casualties and finally surrounding his position following a bitterly fought seven-hour conflict, Captain Barber, after repulsing the enemy, gave assurance that he could hold if supplied by air drops and requested permission to stand fast when orders were received by radio to fight his way back to a relieving force after two reinforcing units had been driven back under fierce resistance in their attempts to reach the isolated troops. Aware that leaving the position would sever contact with