Did you know that theatre set designers played a role in D-Day's success? Or that MI5 were worried the whole plan could be brought down by the Daily Telegraph's crossword? Here are some fascinating facts you didn't know about the invasion that changed the course of the Second World War.
Curious Questions: Who compiled the first crossword? countrylife.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from countrylife.co.uk Daily Mail and Mail on Sunday newspapers.