The world had never seen anything quite like it! On June 6, 1944, after many months of meticulous planning, and during a narrow window of opportune weather, the military campaign to wrest the nations of Europe from Nazi control was unleashed. The logistical genius of Operation Overlord, the greatest amphibious assault in history, slowly unfurled as the American and British-led assault (with Canadian support) on the Normandy coast of Northern France began.