The document summarizes the key events of the D-Day invasion of Normandy on June 6, 1944. Allied forces from the United States, Great Britain, Soviet Union, and Canada launched a massive air, sea, and land attack against German defenses in Normandy, France. Over 130,000 troops landed on five beaches along the Normandy coast, including Omaha Beach, while paratroopers secured beach exits and flanks. It was the largest amphibious invasion in history and helped liberate Western Europe from Nazi Germany's control.