Worst of all were the dead men, for corpses lay in every corner, horribly torn by the shells. Those that still had faces stared with dreadful eyes. Beyond the trenches no-man’s-land was littered with bloated and decaying bodies. All around was desolation. Grass and corn had vanished into a sea of mud. Trees, stripped of leaf and branch, stood as mere mutilated and blackened trunks. Tolkien never forgot what he called the ‘animal horror’ of trench warfare.