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Officer (armed forces)

Person in a position of authority / From Wikipedia, the free encyclopedia

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An officer is a person who holds a position of authority as a member of an armed force or uniformed service.

British_army_Lt._Col._Alistair_Aitken%2C_commanding_officer%2C_Combined_Forces_Lashkar_Gah%2C_and_Warrant_Officer_Evan_Philbin%2C_with_Alpha_Company%2C_4th_Battalion%2C_Royal_Regiment_of_Scotland%2C_discuss_mission_objectives_110716-M-SM240-701.jpg
A commissioned officer (left) and a non-commissioned officer of the British Army prepare for a mission in Afghanistan.
Comparative military ranks
Armies,
air forces
(non-Commonwealth),
space forces		 Navies,
coast guard		 Air forces
(Commonwealth system)
Flag commissioned officers
Field marshal or
general of the army or
general of the air force		 Admiral of
the fleet or
grand admiral		 Marshal of the air force
General or
colonel general or
army general		 Admiral or
general admiral		 Air chief marshal
Lieutenant general or
army corps general		 Vice admiral Air marshal
Major general or
divisional general		 Rear admiral or
Counter admiral		 Air vice-marshal
Brigadier or
brigadier general		 Commodore or
flotilla admiral		 Air commodore
Senior commissioned officers
Colonel Captain Group captain
Lieutenant colonel Commander Wing commander
Major or
commandant		 Lieutenant
commander		 Squadron leader
Junior commissioned officers
Captain Lieutenant Flight lieutenant
Lieutenant or
first lieutenant		 Lieutenant
junior grade or
sub-lieutenant		 Flying officer
Second lieutenant or
junior lieutenant		 Ensign or
midshipman		 Pilot officer
Officer cadet Officer cadet Flight cadet
Non-commissioned officers
Warrant officer or
sergeant major		 Warrant officer or
chief petty officer		 Warrant officer
Sergeant Petty officer Sergeant
Enlisted ranks
Corporal or
bombardier or
specialist		 Leading seaman Corporal or Leading aircraftman
Private or
gunner or
trooper or
sapper		 Seaman Aircraftman or
airman or
aviator

Broadly speaking, "officer" means a commissioned officer, a non-commissioned officer (NCO), or a warrant officer. However, absent contextual qualification, the term typically refers only to a force's commissioned officers, the more senior members who derive their authority from a commission from the head of state.