Lieutenant

Lieutenant insignia
File:Ent lt.png
Earth Starfleet
File:Tos lt.png
Starfleet, 2260s-2270s
File:Mov lt.png
Starfleet, 2280s until early 24th century
File:Tng lt.png
Starfleet, 2350s-present
File:Vgr lt.png
Starfleet 24th century provisional lieutenant
File:29th lt.png
Starfleet, 29th century
File:Mirror lt.png
Terran Starfleet, mirror universe

Lieutenant is a military rank, the equivalent of which is used by the service organizations of many civilizations. As a traditional naval rank, lieutenant is the grade between ensign and the commander grades. In infantry, lieutenant is the lowest officer grade, falling below captain. An infantry lieutenant commands a platoon, consisting of about thirty troops.

In the Earth Starfleet, the rank of lieutenant was directly between ensign and commander. The Federation Starfleet uses additional grades in this transition, lieutenant junior grade, lieutenant and lieutenant commander. This is identical to the system used by many older Earth agencies. Starfleet lieutenants are expected to be effective small-section leaders and technical experts, developing their leadership skills in preparation for promotion to the commander tier.

In old Earth terms (such as the United States armed forces), infantry lieutenants were divided as first lieutenant and second lieutenant, equivalent to naval ensigns and lieutenants junior grade.

In the Romulan Star Empire, there exists a lieutenant grade and also a lower grade, sublieutenant. In the old Earth English navy the rank sublieutenant is equivalent to ensign.

The Andorian Imperial Guard in the 22nd century used the rank of Lieutenant.

This grade presumably exists in some form in many other cultures' rank arrangements.

The New Sydney police bureau uses the rank. Fuchida was a lieutenant in 2375. (DS9: "Prodigal Daughter")

Many rank systems use the term lieutenant in front of other grades to create a lower grade, lieutenant colonel and lieutenant general for example.

Lieutenants

• Fuchida
• Ghrath (Nazi Obersturmführer)
• Tarah
• Turanj (Hirogen posing as Nazi Untersturmführer)
• Unnamed USMC first lieutenant (United States armed forces personnel)
• Unnamed Nazi Untersturmführer (Nazi personnel)

Earth and Federation Starfleet

See Starfleet lieutenants

Klingon Defense Force

• Klag
• Konmel
• Korax
• Laneth
• Synon

Background

Since TNG:"The Defector" establishes that the Romulans have a sublieutenant rank, it seems inarguable that there would be a regular lieutenant rank it was subordinate to.

This chart shows only general equivalencies based on the ranks used by many governments on Earth, as well as the rest of the galaxy.