The Geheime Feldpolizei or GFP (German: [ɡəˈhaɪmə ˈfɛlt.poliˌtsaɪ] (listen)), Secret Field Police in English, was the secret military police of the German Wehrmacht until the end of the Second World War. These units were used to carry out plain-clothed security work in the field such as counter-espionage, counter-sabotage, detection of treasonable activities, counter-propaganda, protecting military installations and the provision of assistance to the German Army in courts-martial investigations. GFP personnel, who were also classed as Abwehrpolizei, operated as an executive branch of German military intelligence detecting resistance activity in Germany and occupied France.