English name German name Headquarters Established Notes Danzig–West Prussia Danzig–Westpreußen Danzig 1939 Formed in the Free City of Danzig and the Polish region of the Pomeranian Voivodeship, which were both occupied by Germany in 1939, as well as the pre-1939 German Governorate of West Prussia within then East Prussia Wartheland Wartheland Posen 1939 Formed primarily in the Polish region of the Poznań Voivodeship and incorporated areas of surrounding Voivodeships after the German occupation of Poland