Task: Text Categorization
Input (English): One side in this battle was supplied in part by a group of troops who ran the Red Ball Express. An offensive launched by the other side in this battle was Operation Bodenplatte, and that side in this battle also launched a surprise attack on the ""ghost front. "" For 10 points, name this 1944-1945 battle fought in the Ardennes Mountains, in which the Germans were ultimately repulsed despite causing a temporary namesake deformation in the Allied line.
Output (English): History