The conflagration that consumed Europe in August 1914 had been a long time in coming—and yet it need never have happened at all. For though all the European powers were prepared to accept a war as a resolution to the tensions which were fermenting across the Continent, only one nation wanted war to come: Imperial Germany. Of all the countries caught up in the tangle of alliances, promises, and pledges of support during the crisis that followed the assassination of Archduke Franz Ferdinand, Germany alone possessed the opportunity and the power to determine that a war in eastern Europe would become The Great War, which swept across the Continent and nearly destroyed a thousand years of European civilization.For nearly nine decades it has been argued that the responsibility for the First World War was a shared one, spread among all the Great Powers. Now, in The Burden of Guilt, historian Daniel Allen Butler has substantively challenged that point of view, establishing...