This Day in History: The Invasion of Poland, September 1, 1939

We're dealing with international history in the first few weeks of my World Politics course (theory too, but the history's also a foundation for the class). And I thought about September 1st today, while discussing the German challenge to international security, 1919-1939. In any case, there's a report at Digital Journal, "Ceremonies Mark Invasion of Poland and Outbreak of WWII." And check Wikipedia for the historical entry there.