"The Longest Day"-Darryl F. Zanuck-1962
No, Zanuck didn't direct the film. Ken Annakin, Andrew Morton, and Bernard Wicki did. Annakin directed the French and English sections. Morton directed the American sections, and Wicki directed the German sections.
Somehow Zanuck was able to get armies from France, Great Britain, and the US to co-operate. They provided soldiers. The US Sixth Fleet provided ships. Much of the film was shot in Cyprus. They avoided a local nudist beach. Stars were recruited and fitted into cameo roles. Sometimes the fit was uncomfortable as in the case of John Wayne playing a Lieutenant Colonel in the 82 Airborne. He was twice as old as his real life counterpart. Robert Mitchum playing a assistant division commander on Omaha Beach was excellent. Quite a few of the actors had been a part of the invasion. Colin Maud lent his shillelagh to actor Kenneth More who played the Beach Master with the bulldog, Winston.
The detail was drawn from Cornelius Ryan's book "The Longest Day." Ryan wrote the script along with Romain Gary, James Jones and several others. Zanuck and Ryan detested each other; communication was through a third party. Ryan had sold the rights to his book to another production company. Their film fell through; Zanuck acquired the rights for $175,000. Two versions were filmed. In one everyone spoke English; in the second everyone spoke their own language and subtitles were used. The second one was the format which was released.
20th Century Fox was simultaneously filming "Cleopatra" with Richard Burton and Elizabeth Taylor. This film which cost $40 million almost sank the studio. Money was more than tight; Zanuck loaned Longest Day money to finish the film. The cost has been reported at $7.5, $8, and $10 million. The initial box office was $30 million. What is more surprising is that when re-issued in 1969 the film grossed over $2.8 million in its first week in the US. It saved Fox.
It was filmed in black and white so documentary footage could be inserted. I think that Zanuck believed that black and white pictures would be more real for the audience. Spielberg made the same decision almost half a century later with "Schindler's List." It was nominated for five Oscars: Art Direction, Editing, Cinematography, Best Picture, and Special Effects. It won for Cinematography and Special Effects. Paul Anka wrote the theme; Maurice Jarre wrote the score and conducted the music. Surprising it is available to stream for free; I think 1,2,3 has it.
I saw this first in a theater. It was a major event. It runs about three hours. I have watched it many times since. This time I had more critical distance; I don't think this is a great film, but it is a very good film. Bosley Crother wrote in the NY Times: "It is hard to think of a picture...doing anymore or any better or leaving one feeling any more exposed to the horror of war than this one does." Highly recommended.