The North African campaign of November 1942-May 1943 was a baptism of fire for the US Army. After relatively straightforward landings, the US II Corps advanced into Tunisia to support operations by the British 8th Army. Rommel, worried by the prospect of an attack into his rear, decided to exploit the inexperience of the US Army and strike a sudden blow against their overextended positions around the Kasserine Pass. However, the Germans were unable to exploit their initial success, and later attacks such as at El Guettar were bloodily repulsed. The fighting in Tunisia taught the green US Army vital combat lessons, and brought to the fore senior commanders such as Eisenhower, Patton, and Bradley.