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Officer Candidate

Navies Armies Air forces
Commissioned and Non-commissioned officers
Admiral of
the fleet
Marshal or
Field marshal
Marshal of
the air force
Admiral General Air chief marshal
Vice admiral Lieutenant general Air marshal
Rear admiral Major general Air vice-marshal
Commodore Brigadier or
Brigadier general
Air commodore
Captain Colonel Group captain
Commander Lieutenant colonel Wing commander
Lieutenant
commander
Major or
Commandant
Squadron leader
Lieutenant Captain Flight lieutenant
Sub-lieutenant Lieutenant or
First lieutenant
Flying officer
Ensign Second lieutenant Pilot officer
Midshipman Officer cadet Flight cadet
Enlisted grades
Warrant officer or
Chief petty officer
Warrant officer or
Sergeant major
Warrant officer
Petty officer Sergeant Sergeant
Leading seaman Corporal Corporal
Seaman Private Aircraftman

Officer candidate or Officer aspirant (OA) is a rank in some militaries of the world that is an appointed position while a person is in training to become an officer. More often than not, an officer candidate was a civilian who applied to join the military directly as an officer. Officer candidates are, therefore, not considered of the same status as enlisted personnel.

In several NATO countries, the term Officer designate (OF-D) is used. In the NATO rank scale, it comes below the grade of OF-1 and above the grade of Student Officer. Ranks designated as OF-D include dokimos efedros axiomatikos in the Hellenic Army, and chuẩn úy ("officer designate") in the Vietnam People's Army. In the German Armed Forces, officer designates are enlisted personnel and have a corresponding rank code.

In the Finnish Defence Forces, officer candidate is an NCO rank, comparable to sergeant. Usually officer candidates are chosen as conscripts, and along with officer cadets are promoted to the rank of second lieutenant.

In the German Armed Forces, officer designates are enlisted personnel. Soldiers accepted for officer training are given the annotation (OA) for Offizieranwärter ("Officer Aspirant") to their rank. Then the designate progresses through the ranks of Fahnenjunker (OR-5), Fähnrich (OR-6) and Oberfähnrich (OR-7) in the German Army and german Air Force. Officer designates in the German Navy go through the corresponding ranks of Seekadett, Fähnrich zur See and Oberfähnrich zur See instead.


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