Before 2 November 1939, the Reichsgau was called Reichsgau West Prussia.[1] Though the name resembled that of the pre-1920 Prussian province of West Prussia, the territory was not identical. Unlike the former Prussian province, the Reichsgau included the Bromberg (Bydgoszcz) region in the south and lacked the Deutsch-Krone (Wałcz) region in the west.