The wide tracks of Soviet T-34S and colossal KV-1S crunched through the snow. Night had fallen west of Belgorod on March 15, 1943. The Soviet tank column was headed toward a village, looking for shelter for the night. Although the village appeared deserted, the Soviet commander was wary. For days now there had been heavy fighting, with the Nazis trying to recapture Kharkov from the Soviets. The T-34s fired incendiary shells, setting ablaze a few peasant huts. When nothing moved, the tanks rumbled into the village. The commander’s tank came to halt, unaware that the muzzle of a Tiger tank...