Agreed, I didn't think about that in the game, probably because military is often associated with men in many contexts. But for a futuristic game it's very odd. That it's not 50/50 would be understandable (I think there's a different affinity to combat, maybe I'm wrong), but not a Roman-like exclusivity.
As for the decoration skills, I've never seen a particular pattern in people I know. Either they have it, or they don't, or they just don't care. I doubt there would be different in combat zones, realistically they would probably not care.
