Have you met any war-weary vets? Are they all socially competent and suave around the ladies?
I have, and I find they don't all fit into a single behavior pattern or stereotype.
But I look no further than my own Dad, a WWII Pacific vet, for an example. Social in the extreme, belonged to lots of local organizations, partied hearty, and loved to flirt with the ladies. Cross him and you were fucking dead.