Video walkthrough for Mission #7 'Death Factory' from Call of Duty: WWII (2017), depicting the Battle of Hurtgen Forest. The Battle of Hurtgen Forest was a series of fierce battles fought from September to December 1944 between American and German forces on the Western Front during World War II. It was the longest battle on German ground during World War II and is the longest single battle the U.S. Army has ever fought. The battle was so costly that it has been described as an Allied "defeat of the first magnitude". The goal of this offensive was to pin down German forces in the forest to keep them from reinforcing the front lines farther north in the Battle of Aachen, where the US forces were fighting against the Siegfried Line network of fortifications. The Germans fiercely defended Hurtgen Forest because it served as a staging area for the 1944 winter offensive (later known as the Battle of the Bulge), and because the mountains allowed access to the Rur Dam at the head of the Rur Reservoir. The Allies failed to capture the area after several heavy setbacks, and the Germans successfully held the region until they launched their last-ditch offensive into the Ardennes. The Battle of the Bulge gained widespread press and public attention, leaving the battle of Hürtgen Forest less well remembered. Link to the full game playlist: • Call of Duty: WWII - Full Game Movie - Har... Gameplay set to Hardened difficulty level. Footage captured on Xbox One. Like and subscribe!