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Multiple realities
(covers information from several alternate timelines)
Starfleet Lieutenant commander insignia
2230s lt cmdr.png

2230s

2230s
Starfleet DIS LT CMDR.png

2240s - 2250s

2240s - 2250s
Officer stripe, 2254-2265.png

2250s - 2260s

2250s - 2260s
Tos lcdr.png

Mid 2260s - Mid 2270s

Mid 2260s - Mid 2270s
Mov ltcmdr.png

Late 2270s - 2350s

Late 2270s - 2350s
Tng ltcmdr.png

2350s -

2350s -
Alternate Lieutenant commander insignia
Mirror ltcmdr.png

Terran Starfleet, 22nd century
(mirror universe)

Terran Starfleet, 22nd century
(mirror universe)
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Starfleet, 2250s (alternate reality)

Starfleet, 2250s (alternate reality)
A.I. Starfleet LT CMDR.png

Starfleet, 2370 (alternate timeline)

Starfleet, 2370 (alternate timeline)
"Excessive honesty can be disastrous particularly in a [lieutenant] commander. [...] Knowing your own limitations is one thing. Advertising them to a crew can damage your credibility as a leader. [...] And you may begin to believe in those limitations yourself."

Lieutenant commander was a commissioned officer rank, the equivalent of which is used by the service organizations of many civilizations.

Origins and history Edit

A traditional naval rank, lieutenant commander was once used in the old navies of Earth, among them the Royal Navy and the United States Navy. In these organizations, a lieutenant commander was a grade between the lieutenant and commander grades with the rank equivalent to a major in the marine or ground forces.

In the mid 2160s, Starfleet was using the rank of lieutenant commander. (ENT: "In a Mirror, Darkly, Part II")

In the early 2260s, the rank of lieutenant commander was being used by the Starfleet of the United Federation of Planets. The insignia was at first the same as that of lieutenant, but by 2266 had developed into its own design.

23rd and 24th century usage Edit

During the 23rd century, certain lieutenant commanders holding high shipboard positions, such as that of first officer, in a military tradition known as brevetting, were authorized to wear the full braid insignia of a commander while still retaining their rank of lieutenant commander. (TOS: "Court Martial", "The Menagerie, Part I")

In the 24th century Starfleet, lieutenant commander is an active rank with its close equivalents in alien militaries being the Cardassian rank of glinn and the Romulan rank of centurion. It is common in informal circumstances to refer to lieutenant commanders in Starfleet simply as "commander" by both those under their command and their commanding officers. Lieutenant commanders normally serve as senior department heads, executive officers on smaller vessels, and in some cases as starship commanders. Lieutenant commanders Tom Markel, Jadzia Dax, and Piersall all held commanding officer postings. It is worth noting that Jadzia Dax served as the commanding officer of the USS Defiant during the height of the Dominion War because she had acted as Captain Sisko's second in command and was the most qualified to take over for him when he had been reassigned to administrative duties at a starbase. However, her posting was temporary until the Captain returned to command a taskforce during Operation Return. (DS9: "Behind the Lines") Another position that could be held by a lieutenant commander was as an instructor for Starfleet's Advanced Tactical Training. (TNG: "Preemptive Strike")

The rank of lieutenant commander is also known to have existed in parallel universes. In the mirror universe, the Terran Empire Starfleet was using this rank in 2155 (with T'Pol being an example) and the rank was still being used in 2267. (ENT: "In a Mirror, Darkly"; TOS: "Mirror, Mirror")

Regarding the service record of Ensign Ro Laren, as of 2369, Jean-Luc Picard explained that "if she hadn't lost her rank in that incident at Garon IV, she'd be Lieutenant Commander by now." (TNG: "The Next Phase")

Commander William T. Riker read, during the mock sentencing staged for the promotion of Lieutenant Commander Worf, in 2370: "We, the officers and crew of the USS Enterprise, being of sound mind and judgment, hereby make the following charges against Lieutenant Worf. One. That he did knowingly and willfully perform above and beyond the call of duty on countless occasions. Two. Most seriously, that he has earned the admiration and respect of the entire crew." Following the reading of the "charges", Captain Picard granted Worf his new rank, "with all the rights and privileges thereto." (Star Trek Generations)

Appendices Edit

Related topics Edit

Background information Edit

The earliest known Starfleet officer with this rank is Hoshi Sato, as established in a biography shown in ENT: "In a Mirror, Darkly, Part II".

Spock, as well as a few other lieutenant commanders seen in The Original Series (such as Benjamin Finney), are very clearly called Lieutenant Commander while wearing the insignia of a Commander. While sometimes viewed as a costumer error, the late original series costume designer William Ware Theiss stated in interviews that this was very much deliberate and that the practice of Lieutenant Commanders wearing the insignia for a full Commander mirrored the US military concept of "brevet" or "spot" promotions given to officers due to the nature of their billets.(citation needededit) Contrariwise, Commander Chakotay wore what would seem to be the provisional rank insignia equivalent to a Lieutenant Commander (two "solid" bars and one "hollow" bar) throughout Star Trek: Voyager, but was only ever referred to as Commander.

There have been four clear instances in Star Trek where a Lieutenant Commander was verbally addressed as "Lieutenant":

Likewise, Tuvok was also incorrectly identified as Lieutenant after his promotion to Lieutenant Commander during his travels in the Delta Quadrant. Conversely, he was frequently seen wearing Lieutenant Commander's pips during the first season despite holding the rank of Lieutenant at the time; this appears to have been a costume error or possibly a sign that the decision to make him a Lieutenant was made after shooting started.

On a similar note, apparent costuming errors throughout Star Trek VI: The Undiscovered Country, hadValeris, who wore Lieutenant Commander ranks (as well as a mismatched uniform department colors), despite only being meant to be the rank of Lieutenant. Because it was deemed too expensive to go back and reshoot the sequences with Valeris wearing the correct rank and uniform color so it was decided to just let it be.(citation needededit)

An issue of Star Trek: The Magazine(citation needededit) established that the costuming department on Star Trek: Enterprise had no insignia for lieutenant commander. However, this does not mean the rank did not exist, merely that no on screen character had it and that no episode called for it. The rank was originally considered for use on the show with Malcolm Reed intended to be a lieutenant commander.

In Enterprise Season Four episode "Bound", Commander Tucker refers to his replacement "Kelby" as lieutenant despite him wearing three pips.

External link Edit

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