The [LN] does plenty of military-style RP, but every character of course, is different, and that's okay. I trust that you've seen enough of Liberty to know how crazy things can get when a huge fight breaks out, so there's another thing, it's a bit hard to act like a "Rigid military type" when you're trying to stay alive/win a fight.
If you mean "act like a navy" as a way of saying "stop doing the LPI's job", well, I wish we could, but they're basically a dead faction, and somebody has to pick up the slack.