Colonel (United States) Colonel (United States) In the United States Army, Marine Corps, and Air Force, colonel () is the most senior field grade military officer rank, immediately above the rank of lieutenant colonel and immediately below the rank of brigadier general. It is equivalent to the naval rank of captain in the other uniformed services. The pay grade for colonel is O-6. The insignia of the rank of colonel, as seen on the right, is worn on the officer's left side (a mirror-image version is worn on the right side, such that the eagle always faces forward to the wearer's front; the
Army General (Soviet rank) is comparable to NATO OF-9 level and equivalent to the UK and US ranks of general; Soviet and current Russian rank systems also have a marshal rank. The corresponding naval rank is admiral of the fleet, which has been used in both the Soviet and Russian navies, although conferred much more rarely. "Army general" was used for the infantry and marines, but in the air force, artillery, armoured troops, engineer troops and signal troops the ranks of marshal of the branch and chief marshal of the branch (also on OF-9 level) were used. The contemporary Russian Army retains the rank