(covers information from several alternate timelines)
|Lieutenant junior grade insignia|
|Starfleet, 2250s - 2260s|
|Starfleet, Mid 2260s - Early 2270s|
|Starfleet, Late 2270s - 2350s|
|Starfleet, 2350s -|
|Starfleet (provisional), 2370s|
The rank of lieutenant junior grade, sometimes abbreviated to lieutenant j.g. or junior lieutenant, was a junior officer grade used by Starfleet that was positioned between an ensign and a full lieutenant.
During certain points in its history, Starfleet discontinued the rank of lieutenant junior grade, promoting ensigns directly to the full grade of lieutenant. This was the case in the mid 2270s, when ensigns adopted the sleeve insignia of the former lieutenant jg rank.
List of Starfleet lieutenants junior grade Edit
|Enlisted personnel||Commissioned officers||Generals and flag officers|
|ENS||LT JG||LT||LT CMDR||CMDR||CAPT||FCAPT||CDORE||RADM||VADM||ADM||FADM|
|2nd LT||1st LT||CAPT||MAJ||LT COL||COL||BRIG||MAJ GEN||LT GEN||GEN||MARSHAL|
|Positions:||Crewman • Technician • Chief||YMN||TAC • SO • 3rd • 2nd • 1st • CO • DD||Portmaster • Chief of Staff • CinC|
|Services:|| Andorian • Bajoran • Cardassian • Jem'Hadar • Klingon • Romulan • SS • Terran Empire Starfleet • Terran Empire MACO •|
United Earth MACO • United Earth/Federation Starfleet • United States • Vulcan