Military rank Typical army and marine field officer ranks include colonel , lieutenant colonel, major and, in the British army, captains holding an adjutant's appointment. In many Commonwealth countries the field rank of brigadier is used, although it fills the position held by brigadier general in other countries. Naval and coast guard senior officer ranks include captain and commander. In some countries, the more senior rank of commodore is also included. In others lieutenant-commanders, as equivalents to army and marine majors, are considered senior officers. Commonwealth air force senior officer ranks include group captain, wing commander, and squadron leader, where such ranks
Group captain the rank until the unification of the Canadian Forces in 1968, when army-type rank titles were adopted. A Canadian group captain then became a colonel. In official French Canadian usage, a group captain's rank title was "colonel d'aviation". In the Argentine Air Force "commodoro" (commodore) is the rank in Argentine Spanish while in the Chilean Air Force, the rank in Chilean Spanish is "colonel de aviacion" or "colonel of aviation". Until 1973 it was used by the Royal Malaysian Air Force (RMAF), today the sleeve insignia is that of a full Colonel. In addition to the equivalents used in most