Japan's attack on the United States naval base at Pearl Harbor on December 7, 1941, brought the [[United States]] into the war. In support of Germany's fellow Axis power, Hitler immediately declared war on the United States. But with the United States involvement, a coalition now existed that, with its vast human and material resources, was almost certain to defeat the Third Reich. To ensure that the alliance not break apart as had happened in 1918 when Russia signed a truce with Germany, the Allies swore to fight Germany until an unconditional surrender was secured. Another reason the Allies wanted the complete military defeat of Germany was that they wished to preclude any possibility of German politicians claiming that "a stab in the back" had caused Germany's undoing, as they had done after World War I. | Japan's attack on the United States naval base at Pearl Harbor on December 7, 1941, brought the [[United States]] into the war. In support of Germany's fellow Axis power, Hitler immediately declared war on the United States. But with the United States involvement, a coalition now existed that, with its vast human and material resources, was almost certain to defeat the Third Reich. To ensure that the alliance not break apart as had happened in 1918 when Russia signed a truce with Germany, the Allies swore to fight Germany until an unconditional surrender was secured. Another reason the Allies wanted the complete military defeat of Germany was that they wished to preclude any possibility of German politicians claiming that "a stab in the back" had caused Germany's undoing, as they had done after World War I. |