You bring up something that struck me watching that last night. I think some of that was US Army film, used for training or “propaganda.” I am a photographer and you can when when a shot is made under stressful conditions. There was no shake and the pictures were pretty damned sharp. It was shot from a tripod.
I have never been in combat, and I was a baby at the time these were made. But for the men wo were there: did you ever see a tripod in combat? I am taking a leap and suggesting you didn’t see a lot of that.
We did get some older guy who was writing a book and he was a nice old coot but we worried about him - it was no place for bystanders or tourists.