A small night patrol of the 109th Infantry began the division's protracted struggle on the Siegfried Line on the Dragon's teeth (fortification) infested Westwall. The patrol crossed the Our River by bridge from Weiswampach, Luxembourg into Sevenig (Our), Germany, making it the first of the Allied armies to reach German soil. The 28th suffered extremely heavy casualties that autumn in the costly and ill-conceived Battle of Hürtgen Forest (19 September to 16 December 1944); the divisional history conceded "the division accomplished little" in the battle. The campaign was the longest continuous battle the U.S. Army fought in World War II. Finally, a tenuous line along the Our and Sauer Rivers was held at the end of November, only to be abruptly broken by two panzer divisions, three infantry divisions and one parachute division (including the 352nd Infantry Division and the 5th Parachute Division) in an infantry-tank attack on the "Ridge Road" just west of the Our River on 16 December.