In three months of savage fighting, the U.S. Seventh Army did what no army in the history of modern warfare had ever done beforeconquer an enemy defending the Vosges Mountains. With the toughest terrain on the Western Front, the Vosges mountain range was seemingly an impregnable fortress, manned by German troops determined to hold the last barrier between the Allies and the Rhine. Yet despite nearly constant rain, snow, ice, and mud, soldiers of the...