By 12 September 90% of the Grand Duchy had been liberated.[14] One month before the start of the Battle of the Bulge, 250 soldiers of the Waffen-SS had unsuccessfully tried to recapture the town of Vianden from the Luxembourgish Resistance during the Battle of Vianden. During the Battle of the Bulge, the northern part of the country was hit by artillery from a special unit that the Germans designed to send shells up to 40 km (25 mi) away (see V3), but the Germans did not take the city.