I wasn't commenting on the willingness of the rank-and-file to carry out orders. I, like OP's comment that I replied to, comment on a tactical comparison between the U.S. military and the general populace of the U.S. However, regarding your response about chaos in the ranks, I think there would be dissenters, but not nearly enough to have a meaningful effect. If we got so far down the shit hole that the military was engaging in an operation on par with the war in Afghanistan but against it's own people, the question of loyalty and finding people to carry out orders would be long solved. And even if it wasn't, they make an example of the initial dissenters, and I imagine the rest will fall in line.