Robert Weary was born on March 19, 1939, in Carlisle, Pennsylvania. He enlisted in the U.S. Army on October 23, 1961, and served as an infantryman until entering Officer Candidate School on April 28, 1963. He was commissioned a 2d Lt in the U.S. Army on October 9, 1963, and then served with the 188th Infantry Regiment at Fort Benning, Georgia, from October 1963 to June 1965. His next assignment was with 1st Battalion, 8th Cavalry Regiment, 1st Cavalry Division at Fort Benning from July to September 1965, and then deployed to South Vietnam from September 1965 to August 1966. Capt Weary served as a training officer and company commander with 2nd Battalion, 1st Advanced Individual Training Brigade at Fort Dix, New Jersey, from September 1966 to December 1967, followed by the Military Assistance Training Advisor Course at Fort Bragg, North Carolina, from January to April 1968. His next assignment was as an Advisor with U.S. Military Assistance Command Vietnam from June 1968 to May 1969, and then attached to the U.S. Army Infantry School at Fort Benning from July 1969 to May 1970. He attended college to complete his bachelor's degree at the University of Tampa from May 1970 to May 1972, and then served with III Corps at Fort Hood, Texas, from June 1972 to July 1973. Maj Weary attended Command and General Staff College at Fort Leavenworth, Kansas, from August 1973 to June 1974, followed by service with the 25th Infantry Division in Hawaii from August 1974 to July 1977. His final assignment was with the U.S. Army Military Personnel Center in Alexandria, Virginia, where he served as a Personnel Management Officer, Chief of the Functions Branch, and Chief of the Personnel Actions Branch from September 1977 until his retirement from the Army on June 1, 1982. Robert Weary died on September 25, 2010, and was buried at Arlington National Cemetery.

His 3rd Bronze Star Medal Citation reads:

For distinguishing himself by meritorious service in connection with military operations against a hostile force during the period June 1968 to May 1969 while serving as Assistant District Senior Advisor, Trieu Phong District and later as District Senior Advisor, Dong Ha District, Quang Tri Province, Republic of Vietnam. During that period Captain WEARY demonstrated unusual professional zeal, determination and enthusiasm in his demanding duty assignments. Immediately establishing a close and cordial working relationship with his Vietnamese counterparts, he succeeded in exerting a profound and beneficial influence in all facets of operations conducted by the contingents he advised. By his keen awareness of the problems inherent in a combat environment, and by applying his extensive professional knowledge, he enhanced the fighting ability of the friendly forces operating within his area of responsibility. Exhibiting sound judgement, integrity and stamina under conditions of stress and hardship, Captain WEARY earned the respect and admiration of the Vietnamese allies who recognized his outstanding contribution to their war effort. Captain WEARY's performance of duty was in keeping with the highest traditions of the United States Army and reflects great credit upon himself and the military service.