Columbia-class battleships became mainstays within the poorer Colonies' fleets. Tauron and Sagittaron were two prime examples of Colonies that used the Columbia-class battleships in their space navies. When the First Cylon War broke out and the Colonies that utilized the Centurion Model 005 Cylons and Mark I Basestars, such as Caprica and Picon, found themselves without a capable space navy to defend themselves. This led to increased demand for the Columbia-class battleships and, eventually, the Galactica-class battlestars, which were direct ancestors of the Columbia-class battleship. After the war, however, these ships were already twenty four years old and considered heavily outdated. They were put into the Reserve Fleet and mostly forgotten. Nemesis was one of three Columbia-class battl