Stunde NullPolitical
Potsdam Conference and the four zones
From 17 July to 2 August, Stalin, Truman, and Churchill — replaced mid-conference by Attlee — meet at Cecilienhof Palace outside Berlin. They divide Germany into four occupation zones, transfer the Polish frontier westward to the Oder-Neisse line, and authorise the expulsion of ethnic Germans from Czechoslovakia, Poland, and Hungary.
Between 1945 and 1950, twelve to fourteen million ethnic Germans were expelled from territories where their ancestors had lived for centuries — East Prussia, Pomerania, Silesia, the Sudetenland, the Banat. Perhaps half a million died on the trek west; the survivors flooded into the ruined remnants of the Reich, where over 70 percent of housing had been destroyed in many cities. The Allied Control Council governed the four zones jointly until the deepening Cold War paralysed it; meanwhile, Allied policy moved from Morgenthau's pastoralisation through JCS 1067 to the Marshall Plan and the active rebuilding of West German democracy. The Stunde Null — 'zero hour' — myth held that everything started over in May 1945. It did not; but it became the founding fiction of the new Germany.