In late summer 1939, Nazi German dictator Adolf Hitler, with one of his foremost Nazi ideologues Alfred Rosenberg, developed the idea for a Jewish "reservation" ("Judenreservat"). The town of Lublin in Poland had been the focus of Nazi planners since the early 1930s, after Herrmann Seiffert described it as the center of Jewish worldwide power and source of their genetic potential. After Nazi Germany had defeated Poland in September 1939 and partitioned the country with the Soviet Union, the Lublin area became part of the Generalgouvernement headed by Hans Frank. Once under Nazi German control, the area was inspected by Frank's deputy Artur Seyss-Inquart in November 1939. He reported that – according to the local governor – the area, "swampy in its nature", would serve well as a reservation for Jews, and that "this action would cause [their] considerable decimation." On 25 November, Frank informed the local administration that an influx of "millions of Jews" was proposed. Also in November, Odilo Globočnik was put in charge of all issues regarding the Jews in the Lublin area, representing the SS as the area's SS and Police Leader. Globočnik set up a department led by a Dr. Hofbauer to plan the settlement of the expected Jews and their conscription to forced labour.