I think you should dedicate an entire section to explaining the hierarchy of Imperial ranks. Is "commander" higher than "captain?" This confuses me, because in Star Trek Captain Picard's second-in-command was a Commander. Yet, in the Star Wars universe, "commander" is often given to someone in charge of a small task force, with captains being the commanding officers of individual ships. And army captains? What's with that? Are they roughly equal rank to a naval captain or are there differences? Colonel? Where does that fit in. I need a list from Grand Admiral to Ensign here!
So yeah, discuss that.