It was the boldest military operation in history – and its success hinged on weather forecaster James Stagg. A new film with Andrew Scott and Brendan Fraser explores his role in the end of World War Two. On his inauguration day, in 1961, John F Kennedy asked the outgoing president, Dwight D Eisenhower, what had given him the advantage over the Nazis on D-Day, when Eisenhower was Supreme Commander of the Allied Forces. "We had better meteorologists than the Germans," Eisenhower said. That