Why did they move?

Why Sudeten Germans migrated in 1945

German refugees from the east at the port of Danzig in February 1945

There were forced migrations all over Europe in 1945.  As the Red Army advanced westwards about 12 million ethnic Germans living in Nazi-occupied countries became refugees.  The Sudeten Germans were one part of this mass displacement. The mass expulsions wiped away centuries of German life in eastern Europe. This was partly decided by governments but it was also driven by immense popular anger towards the Germans in the regions they had occupied.