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
Colonel Colonel Colonel ( "kernel", abbreviated Col., Col or COL) is a senior military officer rank below the brigadier and general officer ranks. However, in some small military forces, such as those of Monaco or the Vatican, colonel is the highest rank. It is also used in some police forces and paramilitary organizations. Historically, in the seventeenth, eighteenth and nineteenth centuries, a colonel was typically in charge of a regiment in an army. Modern usage varies greatly, and in some cases the term is used as an honorific title that may have no direct relationship to military service. The rank of