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In the Earth Starfleet, the rank of lieutenant was directly between ensign and commander. The Federation Starfleet uses additional grades in this transition, so the rank of lieutenant stands between lieutenant junior grade 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.

The rank was also used by Romulan military forces in an equivalent role. In Rihan the rank translated to "arrain".

Rank insignia of Starfleet lieutenants

Command-Service Operations-Service Sciences-Service
2150s Earth ops lt-1-
2270s 2270 Command Lieutenant
2270s 2270 - LT (White)-1-
2280s 2285 Command Lieutenant 2285 Medical Lieutenant
2350s 2350 - LT (Command)-1-
2360s 2366 S-Command Lieutenant 2366 S-Engineering Lieutenant
2370s 2373 Command Lieutenant 2373 Engineering Lieutenant 2373 Medical Lieutenant

Interservice comparisons

Enlisted ranks Commissioned ranks Flag ranks
Federation,
Starfleet
CR
CA
CREW
PO3
PO2
PO1
CPO
SCPO
MCPO
MCPOS ENS LTJG LT LCDR CDR CAPT RALH RADM VADM ADM FADM
Romulan Uhlan Decurion ACENT
(erein)
SUBLT
(erei'arrain)
LT
(arrain)
CENT
(enarrain)
SCDR
(erei'riov)
CDR
(riov)
SADM
(khre'riov)
VADM
(erei'enriov)
ADM
(enriov)
HADM
(rahaen'enriov)
FADM
(khre'enriov)

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Related links

External links