Flight and expulsion of Germans

During the later stages of World War II and the post-war period, German citizens and people of German ancestry were expelled from various Eastern European countries and sent to the remaining territory of Germany and Austria. After 1950, some emigrated to the United States, Australia, and other countries from there. The areas affected included the former eastern territories of Germany, which were annexed by Poland and the Soviet Union after the war, as well as Germans who were living within the prewar borders of Poland, Czechoslovakia, Hungary, Romania, Yugoslavia, and the Baltic States. The Nazis had made plans—only partially completed before the Nazi defeat—to remove many Slavic and Jewish people from Eastern Europe and settle the area with Germans. The post war expulsion of the Germans formed a major part of the geopolitical and ethnic reconfiguration of Eastern Europe in the aftermath of World War II, that attempted to create ethnically homogeneous nations within redefined borders. Between 1944 and 1948 about 31 million people, including ethnic Germans ('Volksdeutsche') as well as German citizens ('Reichsdeutsche'), were permanently or temporarily moved from Central and Eastern Europe.

By 1950, a total of approximately 12 million Germans had fled or been expelled from east-central Europe into Allied-occupied Germany and Austria. The West German government put the total at 14 million, including ethnic German migrants to Germany after 1950 and the children born to expelled parents. The largest numbers came from preexisting German territories ceded to Poland and the Soviet Union (about 7 million), and from Czechoslovakia (about 3 million). During the Cold War, the West German government also counted as expellees 1 million foreign colonists settled in territories conquered by Nazi Germany during World War II.

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Wikipedia