Generalplan Ost

Germany subsequently invaded Denmark and Norway, the Netherlands, and France, and began bombing Great Britain in preparation for Operation Sea Lion, the planned invasion of the United Kingdom. On 21 June 1941, the day before the invasion of the Soviet Union, Himmler commissioned the preparation of the Generalplan Ost (General Plan for the East); the plan was finalized in July 1942. It called for the Baltic States, Poland, Western Ukraine, and Byelorussia to be conquered and resettled by ten million German citizens.