Originally Posted by theducks
Which branch of the services are you using as a model?
The different services have different names for the same pay grade.
Those of us from the Navy -- as well as fans of Star Trek -- would appreciate it if you use the Navy as your model. And, anyway, it would be right thing to do.
Though I must say, when SF takes a direct lift from naval enlisted ranks (seaman becomes spaceman, or even just sailor becoming spacer) , it's sound way too kitschy-quaint for my taste.