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The following is an index of the Ranks of the Starfleet as portrayed in the fictional universe of Star Trek. The ranks listed below are those which are used by the Starfleet of the United Federation of Planets. The ranks indicated have evolved through both live action productions, Star trek fanon, and offical Star Trek publications and literature.
Flag Officer
The rank of Commodore was often mentioned in Star Trek: The Original Series; however the title fell into disuse in the feature films and follow-on series. A Starfleet Commodore is briefly seen in the Federation Council Chambers of Star Trek IV: The Voyage Home, but the later Star Trek television series have never had a Commodore appear on camera. In Star Trek fanon, the rank of Commodore has appeared much more frequently, in particular in Star Trek novels and comic books, although it is usually used as a temporary title for senior Captains commanding a group of starships or a task force in battle.
Officers
There have only been two Fleet Captains shown in the entirety of Star Trek, both from the Original Series. Garth of Izar and Christopher Pike are the only Star Trek characters to have ever held the rank of Fleet Captain. The producers of the Star Trek television series have established Fleet Captain as a rank between Captain and Commodore.
An episode of Star Trek: Deep Space Nine, entitled "Inquisition", may have shown a modern Fleet Captain insignia, that being four collar pips worn with a gold bar base. The insignia was worn by Section 31 Operative Luther Sloan. In the episode, Sloan was referred to as "Director".
Warrant Officers
The only Warrant Officer who has ever been seen in Star Trek was Kosinski, in the Next Generation episode Where No One Has Gone Before. However, due to Kosinskis attitude in the episode, and his highly disrespectful demeanor towards commissioned officers, many have assumed he was a civilian granted a warrant rank due to the nature of his assignment.
Officer Candidates
By the time frame of Star Trek: The Next Generation, students at Starfleet Academy had firmly been established as Cadets. This does not account, however, for the Midshipmen which were seen in Star Trek II: The Wrath of Khan, also Academy students. It is conjectured that the Midshipmen in Star Trek II were senior cadets, most likely fifth year or graduate level students given the advanced nature of their training. Officer Candidate is a purely conjectural rank, mentioned in Star Trek fanon to explain Starfleet officers with direct commissions, such as scientists and medical personnel, who apparently did not attend Starfleet Academy.
Chief Petty Officers
In the modern United States Navy, a Master Chief Petty Officer may further advance to the title of Command Master Chief, Force Master Chief, Fleet Master Chief, and Master Chief Petty Officer of the Navy. The paygrade of the Master Chief does not change, but the responsibilities increase dramatically. Star Trek has never given any indication that such "positional ranks" exist in Starfleet, but it is reasonable to assume given the apparent size of the organization.
Enlisted
- Petty Officer 1st Class
- Petty Officer 2nd Class
- Petty Officer 3rd Class
- Crewman First Class
- Crewman
- Recruit
Until the Fourth Season of Star Trek: Deep Space Nine, Star Trek had never firmly established a set of Enlisted Ranks. The character of Miles O'Brien was one of the first recurring enlisted roles and was the first enlisted character to ever be given a rank insignia pin. Miles O'Brien was often referred to as "Chief", which began in Star Trek The Next Generation, while he was transporter chief. Previous recurring enlisted roles included Yeoman Janice Rand and the security guard Mr. Leslie, both from Star Trek: The Original Series.
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