On December 18, the Kampfgruppe Peiper disabled the guns which were defending the bridge over the river Amblève. In the nighttime of December 20 and 21, the Americans blew up the bridge. The front and the back part with the supplies of the German Divisions were separated. The Germans had to change their route and revenged by killing a lot of civilians. To avoid the capture of a very big fuel depot by the Germans the 5de Belgische Bataljon Fuseliers (5th Belgian Fusilier Battalion) burnt it. This caused a huge sea of flames.
There is an American halftrack in Stavelot which is now a monument.