Operator 5 #36: The Bloody Frontiers - Paperback

With those merciless vandals turned loose by the Purple Emperor, helpless America had been plunged back into the dark days of primitive warfare, and sacked civilization lay smouldering in ruins. For the coming of the Gothic hordes with fire and sword was a living scourge across the face of the eastern states, and Operator 5, racing against time, sped on to New York's wrecked towers to meet there in battle the fury of Urslup the Strong!