Crewman

Crewman (also known as Crewman First Class) is the third-lowest enlisted rank in Starfleet, ranking above a Crewman Apprentice and below a Petty Officer Third Class. Crewman is the highest Starfleet enlisted rank not to be considered a non-commissioned officer.
== Insignia ==
===Starfleet===
===Klingon Navy===
Image:Klingon Navy - B1.PNG
===Romulan Star Empire===
Image:Romulan Star Navy - Uhl.PNG