You're right about that. The only other GOP candidate with military experience is Lindsay Graham who was a JAG Officer.
Perry Military Service
Perry joined the USAF in 1972 and served with distinction for five years. He was discharged in 1977 with the rank of Captain. While in the Air Force, Perry was stationed at Dyess Air Force Base, Texas, Germany and Saudi Arabia. He was assigned to fly the C-130, a military transport aircraft, and flew to various locations around the world, including Europe, South America and Africa.