Operation Clausewitz was part of the defence of Berlin by Nazi Germany during the final stage of the European conflict of World War II. Hitler ordered Fall Clausewitz on 20 April 1945 which called for a number of unknown actions but did include the evacuation of all Wehrmacht and SS offices in Berlin and the destruction of official papers and documents of the state. After this operation was initiated Berlin became a front line city. There is no information today regarding the details of Operation Clausewitz.