RaveThe Wall Street JournalApproximately two million American servicemen witnessed the moment the guns fell silent along the Western Front, and The Unknowns underscores how it met each man in a different place and a different way ... With exhaustive research and fluid prose, Mr. O’Donnell relates both the history of the Unknown Soldier and the story of America’s part in World War I through these soldiers’ experiences. The rich color of their singular narratives—and the broad history they reveal—affirm the wisdom, nearly a century later, of Pershing’s selections [of soldiers to inter the Unknown Soldier].