Had an NCO who used to be an Military Policeman before he worked for me as my Physical Security NCO. He told me of this one incident when an unruly prisoner got beat up until he submitted. According to procedure, MPs are allowed to use their police batons because they will break apart after a certain amount of pressure which avoids unnecessary injury. They were prohibited, however, from using Maglites because they don't break and can inflict quite a bit of damage. He concluded his story with, "it was the damnedest thing, sir, but that prisoner literally ran into my flashlight...repeatedly!"