the Constabulary in Germany post WW II. It was more dog and pony show than effective -- but it did work well enough to deter any resurgence, no doubt about that.

There were some minor successes other than Greece but IMO you got this 110% correct:
"If it was new territory, then the mistakes we made would be understandable and pardoned, but the mistakes we're making now could have been avoided if we didn't officers who blindly adhere to the war is war mindset. The American people should speak out strongly against incompetence in the Army. Losing our young people in pursuit of national security is a terrible necessity, but losing them to incompetence is not acceptable."
Stay alert and keep your head down.