The Ordnungspolizei (Orpo) was the name for the uniformed regular German police force in existence during the period of Nazi Germany, notably between 1936 and 1945. It was increasingly absorbed into the Nazi police system. Owing to their green uniforms, they were also referred to as Grüne Polizei or the green police. The Orpo brought together the city and municipal uniformed forces that'd been organised on a state-by-state basis and covered the towns and cities whereas the Gendarmerie (in… (More on Ordnungspolizei)