One thing I can add about some of the people being the Director's of these Documentary's is that all three of them John Ford, William Wyler and John Huston; were some of the-if not THE, best Movie Director's in the business. Another nice tid-bit about John Ford, is HE is the person for making John Wayne, the biggest star in Hollywood. Together, they made around 20 movies or so.

Otto, by the way, thank you for these links!

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Lost are only those, who abandon themselves) Hans-Ulrich Rudel.