I'm commenting before I watch, probably best considering your responses.
I was only 11 or 12, but my love for history led me up to the history department one break time in secondary school. A slightly older student had brought in a very old (wooden, glass) stereoscopic viewer, and prints from WWI.
Was actually a little difficult to completely understand, these trenches with bodies and bits of bodies, dead british and french soldiers. It was just that bit more striking because they were stereoscopic, the images were as if you were looking at the dead, not just looking at a photo.
EDIT (having watched): Unfortunately it is true, no matter how awful a photograph is, war will still be glorified, and inhumanity will continue. With the WWI and WWII photographs, and those of Vietnam, war was no longer glorified, the carnage was shown to the oblivious public, but it has gone the other way - we are all desensitised to it now.