There's a lot of sorting that happens to recruits who join the US military. Most army and marine personnel are in supporting roles, and those are generally filled by the higher educated recruits who did have other potential opportunities in life... and then you can imagine who gets to be the cannon fodder on the frontlines, and then who is actually doing the atrocities. It's perverse.

The air force is where that dynamic is flipped, and the actual trigger-pullers are highly educated, accomplished people who could have done anything else with their life but cause death and misery. They are some of the most contemptible scum in the imperial core.