A dead soldier, a note in his gas-mask that he’d written before the attack: ‘I died for the Soviet way of life, leaving behind a wife and six children . . .’ A member of a tank-crew who had burned to death – he had been quite black, with tufts of hair still clinging to his young head . . . A people’s army, many millions strong, marching through bogs and forests, firing artillery and machine-guns . . .