Dates: June 6,1944. Participating countries: Canada, U.K., U.S., Poland, Norway, France, Australia, New Zealand, Netherlands, Germany. Casualties: Allies; 12,000. Germany; 7,000. Who won: Allies. Who lost: Germany. One fact about the battle: The landings were conducted in two phases; an airborne assault landing of 24,000 British, American, Canadian and Free French airborn troops shortly after midnight, and an amphibious landing.