3 MORE DAYS TO THE 6TH OF JUNE; THE D-DAY OPERATION OF JUNE 6, 1944, BROUGHT TOGETHER THE LAND, AIR, AND SEA FORCES OF THE ALLIED ARMIES IN WHAT BECAME KNOWN AS THE LARGEST AMPHIBIOUS INVASION IN MILITARY HISTORY. THE OPERATION, GIVEN THE CODENAME OVERLORD, DELIVERED FIVE NAVAL ASSAULT DIVISIONS TO THE BEACHES OF NORMANDY, FRANCE.