Most cops have a background in the military. Do you want a warrior or someone wearing a pussyhat?
I worked with the military. There are good people there, but also a lot of flakes. And, frankly, a lot of people that are not too bright. It was the only job they could get.
So, having a military background doesn’t make one better or worse. It just makes a person someone with a military background.
Cops aren't warriors, nor should they be. In fact, most of the police murders are committed by cops without military backgrounds. The ones who have spent time in the military are the ones exercising restraint. Soldiers would be in Leavenworth for some of the "good shots" that police get away with.