Crewman

A crewman is an individual who works in service to some branch of the military and operates on a naval vessel be it a seafaring ship or a starship. A crewman is the lowest held rank of anyone serving aboard a spacecraft. The term is actually gender neutral and may be applied to both male and female crew members. The term has been used in many television programs that incorporates some type of naval organization, including fictional sci-fi fare, like the Federation Starfleet from Star Trek.