In many of the world's military establishments, a brevet (/brəˈvɛt/ or /ˈbrɛvɪt/) was a warrant giving a commissioned officer a higher rank title as a reward for gallantry or meritorious conduct, but without receiving the authority, precedence, or pay of real rank. An officer so promoted was referred to as being brevetted (for example, "he was brevetted major general"). The promotion would be noted in the officer's title (e.g. "Bvt. Maj. Gen. Joshua L. Chamberlain" or "Bvt. Col. Arthur MacArthur").
This is not to be confused with a brevet in Francophone European military circles, where it is an award; nor should it be confused with temporary commissions.
In France, a brevet is a very broad-meaning word which includes every document giving a capacity to a person. For instance, the various military speciality courses, such as military parachutism, are ended by the award of a brevet.
The more important brevet in the French military is the one of the École de guerre, the French Staff College. Between 1870 and 1940, an officier breveté was a graduate of the École supérieure de guerre. Nowadays, while many officers still attend the école de guerre, they do not use the terme officier breveté.