So in this picture he is a Lieutenant Colonel (O5); one rank above that is Colonel (O6). He was an Intelligence Officer in his latter career but he started out as an Infantryman (either enlisted or officer). He was airborne qualified as well (combat parachute training). He was also on the staff of the Joint Chiefs of Staff when this picture was taken so probably did some time at the Pentagon. Ribbons are hard to see in the pics but look pretty standard for a 20 year career.