Officer candidate orofficer aspirant (OA) is a rank in some militaries of the world that is an appointed position while a person is in training to become anofficer. More often than not, an officer candidate was acivilian who applied to join the military directly as an officer. Officer candidates are, therefore, not considered of the same status asenlisted personnel.
In theFinnish Defence Forces, officer candidate is a service rank, equivalent but senior to sergeant, that is given to conscripts who completed the Reserve Officer School (RUK). At the end of their conscript service, officer candidates are promoted to the rank ofsecond lieutenant.
In theGerman Armed Forces, officer designates are enlisted personnel. Soldiers accepted for officer training are given the annotation (OA) forOffizieranwärter ("Officer Aspirant") to their rank. Then the designate progresses through the ranks ofFahnenjunker (OR-5),Fähnrich (OR-6) andOberfähnrich (OR-7) in theGerman Army andGerman Air Force. Officer designates in theGerman Navy go through the corresponding ranks ofSeekadett,Fähnrich zur See andOberfähnrich zur See instead.
Officer designates in the army and air force wear the same uniform and insignia as the corresponding NCOs; added a silver metal tissue cord on their shoulder straps. A distinction to this is the insignia of theOberfähnrich. His service and dress uniforms, including the shoulder straps, are sowed the silver piping, indicating the officer career instead of the NCO piping. However, his rank insignia on mounting loops for the field uniform are identical to the non-commissionedHauptfeldwebel; plus the cord of the officer designate.
The navy doesn't use a silver cord to indicate the officer designates; instead a golden nautical star is displayed. The rank insignia ofSeekadett andFähnrich zur See is the same as for the corresponding NCOs, but exchanges the anchor symbol with the nautical star. The rank insignia forOberfähnrich zur See is lent to theLeutnant zur See, displaying the nautical star and a golden half-stripe — also on the field uniform.
| from 1956[1] | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Distinction | Fahnenjunker | Fähnrich | Oberfähnrich | Fahnenjunker | Fähnrich | Oberfähnrich | Seekadett | Fähnrich zur See | Oberfähnrich zur See | |
| Rank code | (OR-5) | (OR-6) | (OR-7) | (OR-5) | (OR-6) | (OR-7) | (OR-5) | (OR-6) | (OR-7) | |
In theIndonesian National Armed Forces, an officer candidate (calon perwira) is one who wants to earn a commission as an officer in the armed forces.
Officers in the Indonesian National Armed Forces are commissioned through one of four major commissioning programs. Upon graduation the candidates are promoted to the rank ofsecond lieutenant, thus becomingcommissioned officers. The four programs are:
In thePhilippines, an officer candidate ("OC") is a civilian who holds a baccalaureate degree and who wants to earn a commission as an officer in theArmed Forces of the Philippines. Upon admission to theOfficer Candidate School, officer candidates are appointed as probationary second lieutenants and probationary ensigns.
The wordscadet andofficer candidate are synonymous in referring the rank below second lieutenant. In the Philippines, officer candidates are referred toRESCOM,AFPOCS andPCGOBETC students who had baccalaureate degree, foreign service academies and reserve officer pools[2] undergoing 4 months to 1 year of rigorous military training.[3][4] On the other hand, cadets are referred to students of military schools such asPMA,PNPA,PMMA,MAAP and ACP undergoing 4 years of military training while completing their college degree.[5]
In theBritish Armed Forces, officer candidates (or potential officer candidates) are civilians orenlisted persons who apply to join the service as an officer. This does not infer rank or salutation. On joining the Armed Force, they then become designated asOfficer Cadets.
In theUnited States Army, officer candidates attend either the FederalOfficer Candidate School (OCS) atFort Benning, Georgia, orArmy National Guard Regional Training Institutes (RTIs). RTIs follow the same curriculum and requirements as OCS and commission graduates who receive federal recognition into the Army National Guard. Soldiers who attend OCS are usually prior service enlisted personnel, though civilians with college degrees can enlist and go directly to OCS after basic training.[6] Additionally, Warrant Officer Candidates attend the Warrant Officer Candidate school and are also officer candidates.
With regard to rank, a U.S. Army officer candidate exists in a gray area. AR 600–20, Army Command Policy, places their rank as outranking all enlisted members of the service and rank directly below all officers. They are not yet officers. They are enlisted soldiers who lose all rank status when reporting to the course. Regardless of pay grade, traditionally, but technically incorrect, candidates are outranked by any course cadre or permanent party enlisted soldiers they may encounter. Although their status does not correspond to a position of authority within the standard U.S. Army ranks, candidates serve in leadership training roles at the platoon or company level. They are addressed as "candidate" by the OCS cadre. During the first few weeks of indoctrination, candidates are treated much the same as a newrecruit. In the final weeks of training, OCS platoons may achieve "senior" status and senior officer candidates may be addressed as "Sir" or "Ma'am" by more junior candidates, but never by other enlisted ranks.
Thepay grade for a U.S. Army officer candidate isE-5 (Federal OCS), orE-6 (State OCS) on the enlisted pay scale, unless the candidate previously achieved a higher enlisted rank.[7] For example, anE-7 who becomes a candidate would continue to receiveE-7 pay. The OCS uniform is stripped of the rank patch which is replaced by the letters "OCS." Upon commissioning, a candidate becomes asecond lieutenant.
In theUnited States Marine Corps, officer candidates are trained by Marine officers and staff non-commissioned officer Marines at theOfficer Candidates School inQuantico, Virginia.

In theUnited States Navy, officer candidates are trained at either theOfficer Candidate School or Officer Development School inNewport, Rhode Island. A parallel program known asAviation Officer Candidate School (AOCS) atNAS Pensacola, Florida, previously produced officers slated to becomenaval aviators,naval flight officers, air intelligence officers and aircraft maintenance duty officers not otherwise procured via theU.S. Naval Academy orNROTC. A major distinction between the two programs was the use of enlistedMarine Corpsdrill instructors in the AOCS program, a vestige from the World War II and early 1950s period when AOCS graduates were given the option of being commissioned in the U.S. Navy or U.S. Marine Corps before proceeding to flight training. AOCS was disestablished in 1994 due toBRAC action and merged into the current OCS program in 1994.
Officer candidate is also the rank to which participants in the active duty commissioning program "Seaman to Admiral 21" are appointed. STA 21 officer candidates are appointed to the rank at theNaval Science Institute and go on to hold the rank while training with theNaval Reserve Officer Training Corps at NROTC-affiliated universities. While attached to their colleges or universities, officer candidates are looked to as mentors to the midshipmen throughout the school year. They must maintain 2.0 GPAs, and are urged to assist midshipmen in developing their own leadership abilities.
STA 21 OCs maintain their enlisted pay grade and eligibility for enlisted advancement. The number of sailors selected each year to participate in the "Seaman to Admiral 21 program" varies from year to year. Fiscal year 2010 admitted about 200 candidates, FY11- 115, and FY12- about 75. Currently, the program has been downsized to only admit 50 candidates.
The rank of officer candidate is denoted by an officer's uniform with no insignia except for a line officer's star device on white and dress blue uniforms. If the candidate has never had prior service, rank is typically that of Officer Candidate Under Instruction Second Class (OCUI2).[8] On khaki and working blue uniforms, fouled anchors are worn on the collar points until candidate officer status is achieved, at which time OCs wear the bar insignia similar to their senior/midshipmen 1st class counterparts at the U.S. Naval Academy and in NROTC.
In theUnited States Coast Guard, Officer Candidates (OC) are trained at theOfficer Candidate School (OCS) located at theU.S. Coast Guard Academy inNew London,Connecticut.
In theUnited States Air Force, officer candidates are known as Officer Trainees (OT) and are trained at theOfficer Training School (OTS) atMaxwell AFB, Alabama.
Similar to the Army officer candidates, Air Force officer trainees exist in a gray zone with regard to rank, and their status does not directly correspond to a position of seniority or authority within the standard Air Force ranks. Typically, they are referred to or addressed as "OT," and during the first few weeks of indoctrination, are treated much the same as a new recruit. The pay for an officer trainee, however, is equal to anE-5 on the enlisted pay scale, unless the candidate previously achieved a higher enlisted rank than E-5, e.g., anE-7 who becomes a candidate would continue to receive E-7 pay, and so on. Once commissioned, the new officer advances to the pay rate ofO-1, unless they have at least four years of active duty service, in which case they are paid the higher O-1E rate in recognition of the prior enlisted service. Such pay continues at promotion to the next two grades ("O-2E" and "O-3E"), but is discontinued at the grade ofO-4.
OT rank insignia loosely parallels that ofAir Force ROTC andUnited States Air Force Academy Cadet Insignia, except in the case of the directly commissionedchaplains, lawyers, and medical personnel.
In theUnited States Coast Guard, those who are assigned to the College Student Pre-Commissioning Initiative (CSPI) Scholarship Program hold the rank of Officer Trainee (OT).[9] They are active-duty enlisted members who receive E-3 pay. Their position of seniority or authority is that of an E-3, although they are typically given greater autonomy, responsibilities, and are treated as future officers (I.e. attending unit leadership briefings, eating in the wardroom, and mirroring training activities of Ensigns (O-1). Upon arrival at OCS, they become Officer Candidates (OC).