ORIGINAL: jackx
All this is guesswork though, so I'm liable to be completely wrong.
Let me guess right along with you.[8D]
By the time TV was becoming common, the WW1 vets were already dying from old age. Also, Hollywood was in its infancy during WW1. During WW2 there it was very easy to record things on film-and was done to a great degree. So, the tv era dawns upon us just a few years after the greatest war ever-and the movies and shows just flowed.
I remember as a kid watching shows such as "Combat" with Vic Morrow (not a bad show as I recall-or course, the platoon would loose a man each show while waxing a dozen Germans). There was another show that was somewhat more silly as I recall-The Desert Rats. I think it is highly probable that these shows sparked some interest about the war when I was very young. By the time I was 12 I was scanning libraries for military history.
No doubt some of us are prone to get involved or study military things, but the entertainment industry certainly helped fuel our interests.