History ĭuring the war of Jedi and Sith, the Jedi's Army of Light conducted crusades against the Sith Brotherhood of Darkness. The Jedi came into conflict with the Mandalorians, but the Old Republic continued to fend off the onslaught of the Sith as the Old Republic fell and a dark age began. Even so, the Jedi and the Sith continued to do battle over the millennia. Eventually, war broke out between the Jedi and the Sith, during which time the Sith built empires on the backs of slavery, but it would be the Jedi and the Galactic Republic that ultimately achieved victory.
The Jedi High Council rebuked this and cast the fallen Jedi out of the Jedi Order however, the rogue Jedi gained followers and formed a new order that eventually became the Sith. During a period of time known as the Hundred-Year Darkness, a rogue Jedi came to believe that the true power of the Force lay not through contemplation and passivity, but that only by tapping into the dark side of the Force could the true potential of the Force be reached.
