'Commandant' is a military or police title or rank.
Ireland

Irish Army Comdt's subdued rank slider
'Commandant' ('Comdt') (''Ceannfort'' in
Irish) is a military rank equivalent to
Major in both the
Irish Army and
Irish Air Corps. In the
Irish Naval Service the equivalent rank is
Lieutenant Commander.
France
'Commandant' (shortened from ''Capitaine-commandant'', i.e. a "captain commanding" (a battalion)), is a rank of the
French Army and
French Air Force which is used instead of
major.
The ''commandant'' is also styled ''chef de bataillon'' (Battalion Head) in the
Infantry, ''chef d'escadrons'' (Squadrons Head) in the
armored Cavalry and ''chef d'escadron'' (Squadron Head - note the lack of s) in the
Artillery and the ''
Gendarmerie''.
''Commandant'' is also the style, but not the rank, of the senior officers of the French Navy (''capitaine de corvette'', ''capitaine de frégate'' and ''capitaine de vaisseau'').
Prior to the of armies subsequent to the
French Revolution, the ''Major'' was the officer appointed by the
King to keep track of the expenditures and readiness of a regiment. He could be either a commoner or a nobleman, and was graded as a Commissar, not an officer. The officer at commandant rank level was the ''chef de bataillon'' or ''chef d'escadron''.
''Major'' is now, however, the most senior
Warrant Officer rank, above ''Adjudant-chef''.
Latin America

''Comandante en Jefe''
Commandant, in Spanish ''Comandante'', is a military officer rank used in some
Latin American countries. ''Comandante'' can be translated into English either as commandant or as commander. The rank may also be found in numerous
paramilitary organizations, such as the
Sandinistas.
The rank ''Comandante en Jefe'', (Commandant-in-Chief or Commander-in-Chief) may be found in the nation of
Cuba as a supreme military rank held by
Fidel Castro. Translated as "
Commander in Chief", the rank of ''Comandante en Jefe'' is the equivalent of a
Field Marshal or
General of the Army.
''
Comandante'' was also the title of a
motion picture regarding the life of Castro.
South Africa
In South Africa, Commandant was the title of the commanding officer of a commando (militia) unit in the 19th and early 20th centuries. From
1950 to
1994 it was the official designation of the rank of
Lieutenant-Colonel in the
South African Army,
South African Air Force, and
South African Medical Service.
United Kingdom
In the
British Armed Forces, a Commandant is usually the
Commanding Officer of a training establishment, such as the
Royal Military Academy Sandhurst or the
Royal Air Force College Cranwell.
Colonel-Commandant was an appointment which briefly existed in the
British Army and
Royal Marines between 1922 and 1928. It replaced
Brigadier-General and was itself replaced by
Brigadier.
Commandant was also the appointment, equivalent to
Commodore, held by the Director of the
Women's Royal Naval Service between 1951 and 1993.
United States
In the United States the following two appointments currently exist:
★
Commandant of the Marine Corps
★
Commandant of the Coast Guard
Formerly, Admirals were appointed as commandants of Naval Districts.
Variations
★
Colonel-Commandant, in the British Army between 1922 and 1928, an appointment held by senior colonels, later replaced by the rank of Brigadier
★
Captain-Commandant, in the Belgian Army, the highest rank of subaltern officer, ranking above Captain and below Major
★
Rank and Insignia of the Cuban Revolutionary Armed Forces