As an ambulance driver, Wilder traveled from the Western front to the mountains of Macedonia, where his memoir sheds light on the many nations, races, and religions involved in the conflict in that turbulent region. After the United States entered the war, Wilder, now the soldier, participated in the decisive 1918 actions at Belleau Wood, Soissons, and the closing Argonne drive. His journals provide a brilliant panorama of the activities and people behind the lines, an often arresting portrayal very different from the scenes of death in the trenches that others have described. Throughout, Wilder explores in a fresh and provocative way larger questions about the enduring meaning of a shattering event in world history remembered by himself and others as an encounter with "Armageddon."