Based on the classic novel by Erich Maria Remarque, All Quiet on the Western Front is a saga not just of trench soldiers but of generals, diplomats, and many others touched by the 20th century’s inaugural conflagration. Alternately harrowing and quietly mournful, Netflix’s film is eerily well-timed for our era of resurgent jingoism. One imagines Vladimir Putin watching it with a shudder.