Lieutenant

A lieutenant (abbreviated Lt., LT, LTA, Lieut. and LEUT.) is a junior commissioned officer in many nations' armed forces, fire service or police.

The meaning of lieutenant differs in different military formations (see comparative military ranks), but is often subdivided into senior (first lieutenant) and junior (second lieutenant) ranks. In navies it is often equivalent to the army rank of captain; it may also indicate a particular post rather than a rank. The rank is also used in fire services, emergency medical services, security services and police forces.

Lieutenant may also appear as part of a title used in various other organisations with a codified command structure. It often designates someone who is "second-in-command," and as such, may precede the name of the rank directly above it. For example, a "lieutenant master" is likely to be second-in-command to the "master" in an organisation using both ranks.

Political uses include lieutenant governor in various governments, and Quebec lieutenant in Canadian politics. In the United Kingdom, a lord lieutenant is the sovereign's representative in a county or lieutenancy area, while a deputy lieutenant is one of the lord lieutenant's deputies.

Star Trek uniforms

While there are many costumes from the Star Trek television series and motion pictures, the ones worn by actors portraying enlisted personnel and officers from the fictitious organization Starfleet are the ones most closely associated with Star Trek costuming. Design varied among the successive costume designers, although generally costumes and insignia were consistent within any one series or film. Costumes were re-designed to improve appearance when filmed and to improve the comfort for actors. Deliberately mixing styles of uniforms from the various series was occasionally used to enhance the sense of time travel or alternative universes.

Original Series

The original uniform designs were the product of designer William Ware Theiss. The original series uniforms consisted of a colored top and dark pants, with significant variations between the designs used in the pilot episodes and the rest of the series.

Pilots

The first uniforms, as seen in the unaired pilot "The Cage" (footage was re-used in a later episode, "The Menagerie") and again in the second pilot "Where No Man Has Gone Before", are somewhat different from the Starfleet uniform seen in the rest of the original series. The original concept used a heavy, ribbed turtle neck collar of the same color as the tunic for the men, with a cowl neck variation for the women, each in three colors: gold, beige, and light blue.

Lieutenant (United States)

The military rank of lieutenant in the United States Army, United States Air Force, and United States Marine Corps is now divided between:

During the American Civil War (1861-1865), brevet second lieutenants in the Union Army and Confederate States Army were sometimes also known as "third lieutenants".

In the United States Navy, United States Coast Guard, National Oceanic and Atmospheric Administration Commissioned Officer Corps, and United States Public Health Service Commissioned Corps, the rank of lieutenant is now divided between: