WW’s are over. The worst we’ll ever get again is more bickering and posturing. That’s about it.
Nukes are falling apart and since then, most nations have some kinds of plans in place. There’s been a great NOSTALGIA for gun-based war for a long time, mostly due to historic-based gaming and fiction (FPS basically) but that’s not how wars generally go or would anyway at this point.
The idea of sending bodies to die en masse is always fine unless its your own and the same people who want “glorious battle” won’t do more than SCA type cosplays.