[[Category:th century| *]] [[Category:s| *]] [[Category:th century decades]] In 2540, the Third Doctor and Jo Grant prevented from fomenting war between the Earth Empire and the Draconian Empire. (TV: Frontier in Space, PROSE: Doctor Who and the Space War) They defeated the Daleks' invasion plans on Spiridon. (TV: Planet of the Daleks) However, the path to the Second Dalek War was already set. On 21 June, Bernice Summerfield was born on Earth colony Beta Caprisis. (PROSE: Just War)