The run-up to D-Day was tense, the world hung in the balance and the allies were determined to get Europe back from the Nazis, however, in the lead-up to D-Day, six men would go on to lose their lives in an ambitious training exercise. One of the original plans for D-Day was to land tanks along with the first troops in Normandy, but getting a ship close enough to the shore to offload the tanks onto the beaches would’ve been tricky. A crazy idea was floated: A series of Valentine…