In the summer of 1942, the Wehrmacht invaded the Caucasus in order to overrun critical oil production facilities at Maikop, Grozny and Baku. However, the Red Army stopped the Germans short of their objectives and then launched a devastating winter counteroffensive that encircled them at Stalingrad. Consequently, Hitler grudgingly ordered an evacuation from the Caucasus, but ordered 17. Armee to fortify the Kuban bridgehead and hold it at all costs in order to leave open the possibility of future...