D-Day happened 76 years ago. June 6, 1944, the day in War II on which Allied forces invaded northern France by means of beach landings in Normandy, was the biggest and bloodiest battle to take place during WWII.
Since the landings of troopers was going to happen at sea the code name given for the Normandy landings was Operation Neptune as Neptune is known as the Greek God of Sea. The D-Day invasion was part of the major operation known as Operation Overload.
Until the very last minute, Normandy invasion was the most heavily guarded secret. On June 6, 1944, 45 Allied divisions of men, led by General Eisenhower, began landing on Normandy Beach, in France. Within 3 weeks, Allied troops captured all of the Normandy peninsula and port of Cherbourg. By the end of August, Paris was liberated, and they continued toward Germany.