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
Captain general of the Army Captain general of the Army Captain General () has been the highest rank in the Spanish Army ("Ejército de Tierra") since the 18th century. A five-star rank with NATO code OF-10, it is equivalent to a field marshal of the armies of numerous countries, a general of the Army of the United States, a captain general of the Spanish Navy "(Armada Española)" or an Captain general of the Air Force in the Spanish Air Force "(Ejército del Aire)". A Captain General's insignia consists of two command sticks under five four-pointed stars below the Royal Crown. A personal rank of "captain