— Ch. 1 · Four Zones And The Potsdam Line —
History of Germany (1945–1990).
~6 min read · Ch. 1 of 7
The Berlin Declaration of the 5th of June 1945 marked the official end of the German Reich and began a period of Allied occupation. Four military powers divided Germany into distinct zones, each controlled by France, the United Kingdom, the United States, or the Soviet Union. These boundaries were drawn at the Potsdam Conference between the 17th of July and the 2nd of August 1945. The Oder-Neisse line became the new eastern border for Poland and the Soviet Union, stripping Germany of territories east of this boundary. Millions of ethnic Germans living in these ceded areas faced expulsion to the west. By 1950, some 12 to 14 million refugees arrived in Western and central Germany from former eastern territories. An estimated two million died during their journey due to starvation, disease, or violence. The northern half of East Prussia went to the Soviet Union, while Danzig and southern East Prussia were annexed by Poland. The Saarland remained under French control as a protectorate until 1956. This division created a geopolitical split that would define the next four decades of European history.
Expulsion And Humanitarian Crisis
Between 1944 and 1950, approximately 12 to 14 million German-speaking refugees entered West and central Germany. Many traveled on slow, ill-equipped trains where thousands froze to death or starved. Forced labor camps like Lambinowice, Zgoda, Potulice, Jaworzno, Glaz, Milecin, Gronowo, and Sikawa held those who could not flee quickly enough. Around 8 million ethnic German refugees settled in West Germany, with another 3 million in East Germany. These displaced people formed a major voting block that maintained a culture of grievance against Soviet power. They pressed for full reunification and compensation for lost property. Konrad Adenauer's Christian Democratic Union aligned with these expellee groups politically. However, his Policy of Strength inhibited negotiations with the Soviet Union over territorial claims. By 1990, treaties confirmed that transfers of sovereignty over former eastern territories were permanent and irreversible. The humanitarian crisis left deep scars on post-war society and shaped political discourse for generations.