After Kasserine Pass, the Americans never lost a battle in Europe--despite Mark Clark's befuddled attempts to overcome Kesselring's tactics.
Much of that is thanks partly to Patton's leadership. He took Rommel's theories and outdid both him and Guderian.
Ironic footnote to WWII. In the Battle of France the only success they had against the Panzers was when DeGaulle, also a tank commander, was allowed to cut loose on them.
Sort of. Though all he could do at that point was mass available French armor into a single unit (unlike the Germans, the French dispersed their armor through infantry divisions, considering their role to be infantry support) and mount a strike to attempt to break the German lines. But the French tank crews weren't trained for that, and the communications equipment was vastly inferior to that of the German tanks so the attack bogged down quickly once in contact with the enemy. It was a brief counter-attack that was of little significance, other than letting De Gaul get a symbolic "told-you-so" moment.