Do you feel ie recent All Quiet on the Eastern Front glorified war, or people involved? That book is even more powerful.
What you go for is a "damn I never want to go to war" reaction but what you get is "sucks those guys died, would have been different if i was there though" and that is the "glorification".
I think this is what Truffaut meant that it's a poor medium to convey conflict as the lens must glorify otherwise its not longer a movie, just footage.
I think this is plain wrong. Unless you count "glorification" to mean anything that makes a subject compelling to watch. But I think that's stretching the meaning of the word past it's breaking point.
There were no war movies before WW1 and no major wars for a few generations so there were millions of extremely eager young men lining up in front of recruitment offices in Germany, Britain and France. They had zero idea what they were signing up for.