Erich Maria Remarque did a great job with his story. Being first person in view gave you the feeling that you were there. To add to this he is a very good writer.
Not being in the Great War, I can only imagine the technology of the time and trust in old war movies. Also this is a foreign culture in a foreign time. People there had a tendency to trust and respect their elders unquestionably.
Being of the Vietnam era I could however relate to the parts about the different personalities and some of the war situations and attitudes. I could appreciate the river crossing at night and the defending of the deserted town. I even liked the cat that they befriended in the story. We had a dog that was named Followme, which was one of the few that did not end up in a pot. I even could feel the anxiety of not fighting and just waiting for action. The only major difference is the question of do you want the people to be behind you to push you on or cheer you on, or doing the same job with people that are indifferent or not supportive?
Anyway even with the graphic description of the actual battle is more of a description of war, not a reason to sue for peace at any cost. The story is more of a, "don't let someone pull the wool over your eyes," with the talk of the glory of war. A movie with that theme is "The Americanization of Emily" (1964)". Also don't let Authority blindly lead you into the army with the condos as in, "Private Benjamin" (1980).
This is not the end but the key statement that pretty much sums it up, "He fell in October 1918, on a day that was so quiet and still on the whole front, that the army report confined itself to the single sentence: All quiet on the western Front."