Trivia: Not really a mistake, given the need for drama in a war film, but the mission takes place the evening before D-Day, meaning the Allies had complete air supremacy, and knew the exact time, date and place of the meeting of the German officers, this mission would never have taken place. The brightly lit chateau would have been flattened by a squadron of heavy bombers. Lee Marvin, an experienced combat veteran, pointed this out to the producers and was told to keep his opinions to himself.
Trivia: For production designer Ken Adam's giant Pinewood volcano set, some 700 tons of steel were used, and some 250,000 square yards of canvas. It featured a working monorail and elevators and cost £1 million to produce.
Trivia: Casino Royale was the only film where James Bond dies until the release of No Time to Die over 50 years later.
Trivia: As noted in her memoir 'My Life with Bonnie and Clyde', upon seeing the movie, the real Blanche Barrow described the on screen Blanche saying, "That movie made me out like a screaming horse's ass."