Of course, these aren't questions that have definitive answers. But I was wondering what someone with military experience thought about that kind of scenario. The books and shows I've seen with military themes don't really talk about how they fit in with the way our military works, or they just make a space-faring military "universal," as if it belongs to the U.N. They also seem to use naval ranking which I find odd (as opposed to Air Force, which seems the most similar to flying a space ship).
Any thoughts welcome.