Fascist Germany ignited the fire of World War II in order to seize foreign lands and enslave peoples. In My Struggle, the darkest book of all time, Hitler wrote: "Germany will either be a great power, or this country will not be at all. In order to become a world power, Germany must certainly acquire the size that alone can provide it with its due role under modern conditions." On September 1, 1939, hordes of German tanks, overturning border posts, broke into Poland.