dubya's post about Monarch titles had me thinking about military titles. I employ them in my current project and have taken some liberties with how they are used, since it's SF and not on Earth. But I'm wondering if this will confuse readers who are used to the more common meanings. For example, if a Captain is second below a Commodore in rank. My concern about made up titles is that 1) nobody will know what they mean, and 2) they may just end up sounding silly. Stick with common meanings or make up new "other world" ranks? Which would work best for you if you were reading it?