Although Knappe was the Battalion Adjutant and it was not his duty to man the gun, he moved up to the front with the infantry. Because the area was wooded, the 105 mm gun had to be brought up and fired almost at point blank range directly into the house. The German infantry was hidden behind a building by the bridge, where the gun was maneuvered, but in order to fire all seven crew members would be exposed to machine gun fire. On the mark, the gun was moved, aimed, and fired. Three of the seven crew members were wounded but the machine gun nest was destroyed. This action opened the road for the infantry.