Ranks were created sometime in the mid 22nd century due to the expansion of the United Earth Starfleet. The early rank structure had at least three enlisted position, four officer ranks, and three ranks for use by flag officers.

Uniforms of this period were mainly worn as single fitting jumpsuits with a colored shoulder trim denoting what field a particular officer or crewman specialized in (command, security/engineering, or science/medical).

  command division operations division sciences division
basic crew Earth cmd crew Earth ops crew Earth sci crew
Enlisted Personnel
crewman third class Earth cmd crew3 Earth ops crew3 Earth sci crew3
crewman second class Earth cmd crew2 Earth ops crew2 Earth sci crew2
crewman first class Earth cmd crew1 Earth ops crew1 Earth sci crew1
chief petty officer Insignia unestablished
Line Officers
ensign Earth cmd ens Earth ops ens Earth sci ens
lieutenant Earth cmd lt Earth ops lt Earth sci lt
lieutenant commander[1] Earth cmd ltcmdr Earth ops ltcmdr Earth sci ltcmdr
commander Earth cmd cmdr Earth ops cmdr Earth sci cmdr
captain Earth cmd capt Earth ops capt Earth sci capt
Flag Officers
commodore Earth cdore
rear admiral Earth radm
vice admiral Earth vadm
admiral Earth adm
Other ranks commonly seen in TOS-era and beyond, such as lieutenant junior grade, were never established in any ENT episode or novel. The mention of the "four-star" Admiral was spoken but never seen on screen, and thus the full admiral image is conjecture.
Federation Starfleet rank eras
UFP seal 2160s2230s2240s-2260s2260s2270s2278-2350s2350s-2360s2360s-2370s2370s-2380searly 2380s2386-2400s29th centuryalternate histories: alternate reality 2250salternate reality 2390s/2400s Starfleet Command logo
See also: Federation Starfleet ranksUnited Earth Starfleet ranksMACO ranks


  1. Rank insignia inspired by other Starfleet insignias.

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