What is the main conflict in All Quiet on the Western Front by Erich Maria Remarque?

All Quiet on the Western Front tells the story of Paul Baumer, a nineteen-year-old school graduate who, along with his entire class, enlists in the military to fight for Germany in World War I. Paul is both the narrator and the main character, and the book begins when Paul’s unit –Second Company –is at rest a few miles behind the front lines.