I’ve mentioned it before, but when I watch documentaries on World War 1, and World War 2, I am watching images of people that are all dead (well certainly all the WWI people are and probably 99% of the WWII folk too). It’s really not that long ago, and yet it is. Entire generations gone forever. Just their images on film remain.
The horrific photographs of the dead in WWI (including women and children) is only diminished somewhat in it’s impact by the film being in black and white and often poor resolution. The truth is that tens of millions of people were slaughtered in these wars. Mankind at it’s worst.