In the US military, brevet referred to a warrant authorizing a commissioned officer to hold a higher rank temporarily, but usually without receiving the pay of that higher rank. An officer so promoted may be referred to as being brevetted. For example, "He was brevetted major general." The promotion would be noted in the officer's title, for example, "Bvt. Maj. Gen. Joshua L. Chamberlain". In law, a warrant can mean any authorization. ... In military organizations, a commissioned officer is a member of the service who derives authority directly from a sovereign power, and as such holds a commission from that power. ... Insignia of a United States Air Force Major General German Generalmajor Insignia Major General is a military rank used in many countries. ... Maj. ...

In the 19th century United States Army, brevet promotions were extremely common. New officers received brevet rank until authorized positions were made available. Additionally, officers could be brevetted to fill higher positions or for gallantry. Typically, a brevetted officer would be given the authority and insignia of the brevetted rank, but not the pay. During the American Civil War almost all senior officers received one form of brevet or another. It was not unheard of for an officer to have several different ranks simultaneously; there is an instance of an officer who was simultaneously a brevet Major General of Volunteers, an actual Brigadier General of Volunteers, a brevet Lieutenant Colonel in the regular army and an actual regular army Captain. Alternative meaning: Nineteenth Century (periodical) (18th century — 19th century — 20th century — more centuries) As a means of recording the passage of time, the 19th century was that century which lasted from 1801-1900 in the sense of the Gregorian calendar. ... US Army Seal HHC, US Army Distinctive Unit Insignia The Army is the branch of the United States armed forces that has primary responsibility for land-based military operations. ... The American Civil War (1861–1865) was fought in North America within the United States of America, between twenty-four mostly northern states of the Union and the Confederate States of America, a coalition of eleven southern states that declared their independence and claimed the right of secession from the... Insignia of a United States Air Force Major General German Generalmajor Insignia Major General is a military rank used in many countries. ... A Brigadier General, or one-star general, is the lowest rank of general officer in the United States and some other countries, ranking just above Colonel and just below Major General. ... In the U.S. Army, Air Force and Marine Corps, a lieutenant colonel is a commissioned officer superior to a major and inferior to a colonel. ... The Regular Army is the name given to the permanent force of the United States Army that is maintained during peacetime. ... Captain is both a nautical term and a military rank. ...

Today the practice of brevetting has disappeared from the U.S. military, though the similar practice of frocking (authorized early wearing of a higher rank by a promotee, before the actual promotion takes effect) continues, particularly though not exclusively in the United States Navy. The United States Navy (USN) is the branch of the United States armed forces responsible for naval operations. ...