You can see the effect it has on accustomed people on page 109 “One of the recruits has a fit.” It continues to page 111 “The first recruit seems actually to have gone insane. He butts his head against the wall like a goat”. So if your not used to the front you can actually go insane, and if you spend a total of four years on the front like Paul then that is definitely going to take its toll. Then on page 113 “We have become wild beasts. We do not fight, we defend ourselves against annihilation. It is not against men that we fling our bombs, what we do know of men in this moment when Death is hunting us down--now, for the first time in three days we can see his face, now for first time in three days we can oppose him; we feel a mad anger”. So after the bombardment Paul doesn’t even see the enemies as people, he sees ‘death’. You can also see clear disillusionment on page 133 “How long has it been? Weeks--months--years? Only days.” There the time in the trenches with the constant fear of death time just seems to fly by, how else could so many people die, but then logic takes over and says it has only been a few days. But in the end everything has to be