6 June 1944. Canada, Britain and the US storm the Normandy coast to wrestle back Europe from Nazi control. The soldiers call it The Longest Day. We call it D-Day. This unflinching documentary tells the story of the historic battle through the dramatic recollections of those caught up in the action. The series gives a 360-degree view of the invasion - from a British sailor who laid underwater charges that would blow up German defences, to Canadians, Americans, French resistance fighters and German defenders. Moving interviews are combined with newly discovered footage and dramatic reconstructions that plunge viewers into the heat of battle.