I don't know about now, but when I was in the military I didn't run into these types often. They existed, but less commonly than in my civilian life back in Podunk Hillbilly Land. Most of us were just trying to get our job done and have a good time, not generally in that order. We didn't really discuss politics.

My buddy lived near the nuke school in South Carolina a couple of years ago. He said the folks that came out drinking from the school were not what you'd think. There were activists trying to bring about change and give a voice to the students, at least one enby, some cornfed cowboy dude that was very protective of his gay friends to the point of fighting a civilian over drunk comments, and a douchey looking guy who hung out with them.

Whether you're surrounded by them depends a lot on your rank. My brother is Navy here in Australia. He's not a clever guy, and he's on the right.

However, I've met some of the people he worked with in leadership positions, and they're at worst centrist (or at least know how to keep quiet for the sake of being amicable)

That's not to say being smarter innoculates you against a culture of indoctrination, but it does seem to be strongest at the low end of the spectrum.