Is this image of a "Police" badge wearing man/soldier wearing what appears to be WW I era army clothing a member of the Army Military Police, the National Guard Police, the State Guard or does he belong to an entirely different civil or non-military organization?
Clothing wise, he's wearing a white linen neck stock under what looks like a "stand" collar as found on the 1911 and later pattern army issued service coats. Over that is a 1909 (or earlier) pattern army issued overcoat with turn back cuffs, and a 1911 Campaign Hat sits atop his head. The lower third of the photo is too dark to determine what pattern of shoes, or leggings, or puttees, he's wearing.
The only equipment is the baton or "billy club", which could or could not be military issued. To date, I've not found any information regarding an army issued baton, billy club, or night-stick.
The only insignia is the silver, shield shaped badge, which clearly has the word "POLICE" stamped or engraved across its top. There is additional writing under the word police, but it is illegible.
So, who exactly in the WW I era military, would wear a badge, as opposed to an MP Brassard, proclaiming he is a military law enforcement official?
If not military, what sort of civil organization might this guy belong to?
Thanks for looking ... World War I Nerd