In Tunisia the Americans had to pay a stiff price for their experience, but it brought rich dividends. Even at that time, the American generals showed themselves to be very advanced in the tactical handling of their forces, although we had to wait until the Patton Army in France to see the most astonishing achievements in mobile warfare.
"The Rommel Papers". Book edited by Basil Henry Liddell Hart. Chapter 23: "The Sky Has Grown Dark," p. 523, 1953.