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
General officer In the old European system, a general, without prefix or suffix (and sometimes referred to informally as a "full general"), is usually the most senior type of general, above lieutenant general and directly below field marshal as a four-star rank (OF-9). Usually it is the most senior peacetime rank, with more senior ranks (for example, field marshal, marshal of the air force, fleet admiral) being used only in wartime or as honorary titles. In some armies, however, the rank of captain general, general of the army, army general or colonel general occupied or occupies this position. Depending on circumstances and