Commandant (rank)

Common military ranks in English
Navies	Armies	Air forces
Commissioned and Non-commissioned officers
Admiral of the fleet	Marshal or Field marshal	Marshal of the air force
Admiral	General	Air chief marshal
Vice admiral	Lieutenant general	Air marshal
Rear admiral	Major general	Air vice-marshal
Commodore	Brigadier or Brigadier general	Air commodore
Captain	Colonel	Group captain
Commander	Lieutenant colonel	Wing commander
Lieutenant commander	Major or Commandant	Squadron leader
Lieutenant	Captain	Flight lieutenant
Sub-lieutenant	Lieutenant or First lieutenant	Flying officer
Ensign	Second lieutenant	Pilot officer
Midshipman	Officer cadet	Flight cadet
Enlisted grades
Warrant officer or Chief petty officer	Warrant officer or Sergeant major	Warrant officer
Petty officer	Sergeant	Sergeant
Leading seaman	Corporal	Corporal
Seaman	Private	Aircraftman

Commandant (/ˌkɒmənˈdɑːnt/ or /ˌkɒmənˈdænt/) is a military or police rank. In the French, Spanish, Irish and Monegasque armed forces it is a rank equivalent to major. In South Africa for most of the second half of the 20th century, commandant was a rank equivalent to lieutenant-colonel in other countries.

In the Canadian Forces, “Commandant” is the French language title for a major of any unit. However, in English, “Commandant” is used exclusively to identify those commanding officers responsible for units that provide a service or oversight to some lodger population (such as a military school with trainees, a military college with students, a detention facility with prisoners, or a long-term care facility with patients). Prior to its amendment in 2014, the National Defence Act identified “Commandant d'aviation” as the French translation for the rank of Squadron Leader.

Commandant (Comdt) (Irish: Ceannfort) is a military rank in both the Irish Army and Irish Air Corps. It is equivalent to major or squadron leader in other armed forces. In the Irish Naval Service, the equivalent rank is lieutenant commander.

...
Wikipedia