In December of 1944, the Germans launched 200,000 soldiers and over 500 tanks against the Allied lines in Belgium in what would prove to be the costliest land battle of World War II. Hitler’s desperate attempt to stave off defeat in Europe managed to catch the Allied forces off guard, pushing them back to form a new frontline that "bulged" into their controlled territory. For 41 days, amidst brutal winter conditions, the two sides engaged in fierce pitched fighting that involved over one million men in total and would eventually claim more than 160,000 casualties and the loss of over 1,600 tanks. This stunning documentary details how the tactics of the Allies repelled this massive offensive and broke the back of the German army in a battle that would eventually determine the final outcome of the war.