Oliver served as an Infantry master sergeant in a front-line Infantry unit during the Korean War. He received a direct appointment as a second lieutenant, Infantry, in 1952, served in command and staff assignments in the 45th Infantry Division for almost two decades and another 10-years in U.S. Army Reserve assignments. His last military assignment was at the John F. Kennedy Center for Special Military Assistance, where he served as a Psychological Operations Officer with the 1st Psychological Operations Battalion, a Special Forces unit at Fort Bragg, North Carolina.
He is a retired U. S. Army Infantry Major.
He is a retired U. S. Army Infantry Major.

Following a Veterans Day talk to students, faculty, and guests, a reception, question-answer time, students continued to ask questions, following Major Clarence G. Oliver, Jr. in the hallway as he was leaving the building. Major Oliver is pictured talking with the students as they continued to ask questions.