One-star rank

An officer of one-star rank is a senior commander in many of the armed services holding a rank described by the NATO code of OF-6. The term is also used by some armed forces which are not NATO members. Typically, one-star officers hold the rank of commodore, flotilla admiral, brigadier general, brigadier, or in the case of those air forces with a separate rank structure, air commodore.
Officers of one-star rank are either the most junior of the flag, general and air officer ranks, or are not considered to hold the distinction at all. Specifically, in many navies, one-star officers are not considered to be flag officers, although this is not always the case. The army and air force rank of brigadier general is, by definition, a general officer rank. However, the equivalent rank of brigadier is usually not designated as a general officer. The air force rank of air commodore is always considered to be an air-officer rank.
Australian one-star ranks
In the Australian Defence Force the following ranks of commissioned officers are awarded one-star ranks:
- Commodore (Royal Australian Navy one-star rank)
 - Brigadier (Australian Army one-star rank)
 - Air commodore (Royal Australian Air Force one-star rank)
 
Canadian one–maple-leaf ranks
- Commodore (Royal Canadian Navy one-star-equivalent rank)
 - Brigadier-general/brigadier-général (Canadian Army and Royal Canadian Air Force one-star-equivalent rank)
 
The maple leaf appears with St. Edward's crown and crossed sabre and baton.
Before unification in 1968, the rank of air commodore was the one-star rank equivalent for the Royal Canadian Air Force, and brigadier for the Canadian Army.
German one-star ranks
Army and Air Force:
- Brigadegeneral (brigadier general)
 - Generalarzt ("surgeon general")
 - Generalapotheker ("pharmacist general")
 
Navy:
- Flotillenadmiral ("flotilla admiral")
 - Admiralarzt ("surgeon admiral")
 - Admiralapotheker ("pharmacist admiral")
 
Indian one-star ranks
- Air commodore (Indian Air Force one-star rank)
 - Brigadier (Indian Army one-star rank)
 - Commodore (Indian Navy one-star rank)
 - Deputy inspector-general of police (Indian Police Service one-star rank)
 
Pakistani one-star ranks

- Deputy inspector general of police (Pakistan Police one-star rank)
 - Air commodore (Pakistan Air Force one-star rank)
 - Brigadier (Pakistan Army one-star rank)
 - Commodore (Pakistan Navy one-star rank)
 
United Kingdom one-star ranks
- Commodore (Royal Navy one-star rank)
 - Brigadier (British Army and Royal Marines one-star rank)[1]
 - Air commodore (Royal Air Force one-star rank)[2]
 
United States one-star ranks
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- Rear admiral (lower half) (United States Navy, Coast Guard, Public Health Service Commissioned Corps and National Oceanic and Atmospheric Administration Commissioned Corps one-star rank)
 - Brigadier general (United States Army, Marines and Air Force one-star rank)
 
Other naval one-star ranks
In the modern naval services of Belgium, Denmark, Finland and Sweden, the one-star rank is flotilla admiral.


