On 1 August 1944, 2e DB landed at Utah Beach in Normandy as part of Major General Wade Haislip's United States XV Corps of Lieutenant General George S. Patton, Jr.'s United States Third Army. Both of these American generals spoke French fluently. Later that month, 2e DB participated in the Battle of the Falaise Pocket, which inflicted a major defeat on the German Army. Like most new division commanders, Leclerc also made errors, in his case by allowing 2e DB to use roads that had been earmarked for American units, thereby causing traffic jams and holding up the American advance.