Here's one example; this guy may not have been a real cop but he did learn his indoctrination tactics in the military. There's plenty more research where that came from.
"Caught on camera: Shocking abuse at California boot camp under 'sergeant' who 'posed as police officer to kidnap children'"
http://www.dailymail.co.uk/news/article-2054919/California-boot-camp-child-abuse-Kelvin-Sergeant-Mac-McFarland-caught-camera.html