I've read that the average age of World war II servicemen was 20 to 25 years of age. In Vietnam it was 19. Alexander the Great became leader of Macedonia and began his conquests at age 20. So almost EVERY war movie I have ever seen has older actors starring. Even my beloved Band Of Brothers cast actors over 30 years old in almost every part. George Seagal in "Bridge At Remagen" looks like he is in his late thirties (and Ben Gazzara looks in his 40s). James Caan in "A Bridge Too Far" Richard Burton in "The Longest Day" William Holden in "Stalag 17" Woody Harrelson in "The Thin Red Line" John Wayne in "The Fighting Seabees" John Cassavetes in "The Dirty Dozen" Steve McQueen in "The Great escape" It seems that there is a long tradition of casting stars who would have been way over the hill in war movies... Any thoughts?