Think bigger picture FQ, Of course Stewart and Niven are among the actors that had military careers, so did Elvis and 95% of his movies were awful.
I am reflecting on the metaphor of George C. Scott playing Patton, in regards to John Wayne. Here on this forum, I would be be hard pressed to find anyone in disagreement.
The OP was on the the anniversary of THIS day. Which is specific to a true American. John Wayne....
Quoting another "military" movie Stripes:
"Lighten up Francis"