Dude, you couldn’t be more misguided in your knowledge of history.
Apart from that, the effect on people who saw Saving Private Ryan in the movie theaters for the first time, was the exact opposite of what you wrote. People left the theater crying over the violence and inhumanity, not the red white and bullshit patriotic message at the end.
That movie made it clear that war is the most horrible, inhuman thing we can do, and it should have convinced people of the evil of war beyond a shadow of a doubt.
This is a really disappointing article compared to a lot of the other stuff you’ve written.