Who are the German military police?

There were several different military police. The Army had a military police who were wore the standard army uniform but wore a different eagle and swatika on their uniform and helmet. They wore one on their LEFT sleeve. The SS were the political police and were the ones who wore black uniforms. Before the war, the SA were the police. They wore brown shirts and the small hat (similiar to a kepi) and were called the "Brown shirts". They were replaced by the SS.