Answer
Michael Wittmann claimed to have destroyed 2 anti-tank guns in his famous engagement at Villers-Bocage on 13 June 1944. He is said to have destroyed the guns by firing his Tiger I's 88mm cannon at them from a distance of 1,200 yards. This engagement is often cited as an example of Wittmann's skill as a tank commander and his ability to use the Tiger I's powerful armament to great effect.