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
Hellenic Army officer rank insignia in use) in late 1920s. The rank of "Stratarchis" (Στρατάρχης, equivalent to Field Marshal or General of the Army) has been historically used, but is no longer extant. It was first awarded to King Constantine I for his leadership in the Balkan Wars. The rank was subsequently assumed by his successors upon accession, until the abolishment of the monarchy. The only regular officer to have been awarded the rank was General Alexander Papagos on 28 October 1949. Hellenic Army officer rank insignia This article describes the military rank insignia used by the Hellenic Army. The current insignia date back to