I'm writing a sci-fi novel in which there's a war going on - pretty much like star wars but without the whole mystic-religion / force-thingy. I'm not really sure about the rank I should give to one of my characters: she's a nurse and she's just finished the naval school of medicine. The question is: is she an officer? or a warrant officer? Should I go with ensing or warrant officer-something? Also, I'm writing in Italian, which is my mother language, so should I give her the warrant officer rank, I'm not sure how should I translate it in my language. If anyone could give me a tip, I don't wanna write something wrong.