In December 1944, the German Wehrmacht launched what would be its last offensive of World War II, a last-ditch, all-out effort to throw the Western Allies back from Germany's borders. It would take the Allies almost six weeks to blunt the effort and force the German Army back, but for a time, it looked like the Nazi offensive might actually succeed in splintering the Allied invasion of Europe.  Germany threw everything it could into the effort, including an estimated 410,000 men, 1,500 armored...