The origins of the Dalek Civil War could be traced back as far as the year 4000, over one thousand years before it took place, with the Daleks' attempted invasion of the solar system via use of the Time Destructor. (TV: The Daleks' Master Plan) The failure of the invasion alerted several galactic powers, Earth among them, to the threat of the Daleks and numerous war forces were assemble to go to war against the Dalek Empire over the course of the following millennium, sparking the Great War which threatened to destroy the Daleks. (PROSE: The Evil of the Daleks)