September 1, 2009, will mark the 70th anniversary of the Nazi German invasion of Poland, which sparked World War Two in Europe. Within days of the invasion, Britain, France, and others declared war on Germany in response. On September 17, the Soviet Union invaded Poland from the East, sealing the eastern European nation’s fate. Poland was to be occupied (in part or in whole), for the rest of the war, and would lose a larger percentage of its population due to the war than any other participant in World War Two.
Read more at http://www.historyguy.com/worldwartwo/german_invasion_of_poland_1939.htm