From ebgames.com:

June 6, 1944 - D-Day - The downfall of Nazi Germany's occupation of Europe begins with the Allied invasion of France. The campaign is supported by more than 17,000 U.S. and British paratroopers, dropped behind enemy lines prior to the assault on the beaches of Normandy. These brave troops pave the way for the Allies by attacking the German forces from inside occupied Europe, fighting their way through enemy territory to thwart the Nazi war machine from within.