IN THE SUMMER OF 1942, with the German army deep inside the Soviet Union, Adolf Hitler launched Operation Blue, an attack from around Kharkiv in south-east Ukraine across hundreds of miles of steppe towards the oil fields of the Caucasus. Part of the plan required the German Sixth Army under General Paulus to secure the flank by seizing the industrial city of Stalingrad on the banks of the Volga.
By the middle of September Paulus’s troops were fighting their way, street by street, building by building, and sometimes room by room, through a city reduced to ruins by artillery shelling and the bombs of the Luftwaffe. The fighting was ferocious and, although by November most of
