society > armed hostility > warrior > soldier > soldier by branch of army > [noun] > military policeman (4)
slang. A policeman or detective; (Australian) a military policeman. Cf. John, n. 3. Now chiefly historical.
(a man who is) a member of a military police force.
A person who wears a red cap. British Military slang. A member of the military police.
slang. An American military policeman; hence, any military policeman.