Germanisation in Poland (1939–1945)
An intense campaign of Germanisation was carried out by Nazi Germany in German-occupied Poland during World War II, as part of a broader program of racial domination and territorial expansion that sought to dismantle Polish society and replace it with a German settler population. This included the systematic murder of Polish intellectuals and the abduction and forced Germanisation of Polish children.
Source: Wikipedia — Germanisation in Poland (1939–1945) (CC BY-SA 4.0)