The standard 75mm gun could tackle the majority of German armoured vehicles, and the HE shell was effective, but could not penetrate the front of heavier German tanks such as the Tiger or Panther. Although a rare occurrence on the battlefield, during the Battle of Normandy it was in the British sector where the majority of these German machines were encountered. The issue with the 75mm gun was perhaps most pronounced during the Battle of Villers-Bocage in which the Cromwells were unable to engage German Tiger tanks frontally with any reasonable chance of success. Several Tigers were knocked out by British forces in the battle nonetheless.