The (Secret Field Police) or GFP 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 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.