Battle of Corbos

The Battle of Corbos was a battle fought during the Hundred-Year Darkness between the Jedi Order and Dark Jedi. Having fought for nearly a century, the Jedi and their rival Dark Jedi made a final stand at Corbos, a mining world. During the battle, the Dark Jedi were apparently destroyed along with all life on Corbos.

The surviving Dark Jedi fled into uncharted space, where they discovered Ziost and Korriban, home to the primitive but unusually Force-sensitive Sith people. Using their training in the Force, the fallen Jedi amazed the Sith and elevated themselves to god-like status on Korriban and Ziost, becoming the rulers of the Sith people. As years passed, and interbreeding occurred between the Fallen Jedi and the Sith, the term "Sith" came to mean not only the original inhabitants of Ziost and Korriban, but also their fallen Jedi masters.