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
Air force officer ranks of air force rank insignia in use, many air forces use army-style rank insignia whilst others follow the Royal Air Force style (shown below). Air force officer ranks Many Air forces of use a rank system similar to Armies, however, the RAF and the air forces of many Commonwealth countries, or those formerly under a British influence, use a different set of ranks loosely based on naval equivalents; Lieutenant, Commander, Captain and Commodore are prefixed for air force use with "Flight", "Wing", "Group" and "Air", respectively (the first three being the units that they used to command). To assist in