The war resulted in countless millions dying endless deaths, as time travel was used by both sides to reverse battles that caused massive fatalities on both sides. These excesses of temporal warfare eventually led to the whole of the conflict becoming "time-locked", so that no time traveller could go back into it. The Doctor described the final days of the war as "hell", featuring "the Skaro Degradations, the Horde of Travesties, the Nightmare Child, the Could-Have-Been King with his army of Meanwhiles and Never-Weres".