In 1944, General Omar Bradley inspected the invention of Sgt. Curtis G. Culin, the heavy steel, tusklike prongs welded on the front of a Sherman tank in the 2nd Armored Division. During the Normandy campaign in France, the advance of the U.S. Sherman tanks had been seriously obstructed by the local terrain (called bocage in French). Hedgerows between small fields were tall, very thickly overgrown banks. Only with the prongs, dubbed the Rhinoceros, could the tanks ram through without the front end rising high and exposing their vulnerable underbelly to shells from the enemy hidden by hedgerows. Impressed by the demonstration, Bradley ordered emergency construction of many more using steel beams from the German beach defenses.«