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A petty officer first class is an advancement of petty officer, and is one of the most basic NCO rates, a grade higher than an petty officer second class and a grade below chief petty officer in some rank structures. This grade of PO is roughly equivalent with the authority of a basic sergeant of military forces.
Petty officer first class uniform insignia existed in Starfleet, a rank insignia worn on the Starfleet uniforms of numerous eras. (FASA RPG modules: Cadet's Orientation Sourcebook, Star Trek: The Next Generation Officer's Manual)
|Starfleet petty officer first class insignia|
|era||general wear||command division||operations division||sciences division|
(admin, pilot, engineer)
|security||special services|| sci-ops|
(ops, sci & tac ops)
|Federation Starfleet ranks (2260s)|
|Federation Starfleet ranks (2270s-2350s)|
|Federation Starfleet ranks (2350s-2360s)|
|Federation Starfleet ranks (2360s-2370s)|
|Federation Starfleet ranks (2370s-2380s)|
Petty officers first classEdit
|Enlisted ranks||Commissioned ranks||Flag ranks|
|Earth SF||CREW|| PO2
|Starfleet & SFMC|| ENS JG
||LT JG||LT||LT CMDR||CDR|| CDORE
||1ST LT||CAPT||MAJOR||LT COL||COL||BRIG||GEN|