At the end of World War II, there were over 3 million Polish citizens in Germany, most of them displaced persons (DPs) who got there either as slave labourers, prisoners of German concentration camps or prisoners of war.
The aftermath of World War II saw a large population of Polish citizens residing in Germany, with most being displaced persons (DPs), having been brought to the country under various circumstances such as forced labor, imprisonment in Nazi concentration camps, and captivity as prisoners of war.