H. Beam Piper,
Flight From Tomorrow
“ He would recruit an army such as the universe had never seen, a swarm of men from every age in the past. At that point, he would return to the Hundredth Century of the Atomic Era, to wreak vengeance upon those who had risen against him. A slow smile grew on Hradzka's thin lips as he thought of the tortures with which he would put Zarvas Pol to death. ”
