Entering World War One against Germany was America's greatest blunder of the 20th century. America had no reason to join the 3-year-old struggle. By sending two million doughboys to the Western Front, America shattered the battlefield stalemate, allowing Britain and France to impose a devastating peace on Germany, thus igniting toxic German cries for revenge. Absent America's entry into the war, the exhausted combatants would have sought a peace of compromise. There would have been no victor, no vanquished, no Versailles Treaty, no German demands for revenge, no Hitler and surely no World War II and even no Cold War. The tale of how America stumbled into war is told by America's Greatest Blunder . It chronicles America's journey from sensible neutrality to its war declaration. It then describes how legions of doughboys won the war, giving victory to Britain and France - thus launching the young century on its course of decades of unprecedented violence.