Commandant is a title often given to the officer in charge of a military training establishment or academy. This usage is common in English-speaking nations. In some countries it may be a military or police rank. It is also often used to refer to the commander of a military prison or prison camp.

What does a commandant do?

Headquarters commandant denotes a staff officer in charge of the internal administration of a military headquarters, with emphasis on maintenance and security of buildings and grounds.

What is the difference between commander and commandant?

As nouns the difference between commandant and commander

is that commandant is a commanding officer, usually of a specific force or division while commander is one who exercises control and direction of a military or naval organization.