Battle of Ossus (Great Sith War)

A battle on Ossus took place in the year 3996 BBY during the Great Sith War, and was one of the last major battles to be fought during that conflict. With Aleema Keto's destruction of the Cron Cluster through the use of Sith magic, an enormous supernova was on a direct course for the Jedi library world of Ossus. With the knowledge that the Sith-created supernova would force the Jedi to evacuate Ossus, the Sith Lords Exar Kun and Ulic Qel-Droma led an attack against the Jedi planet, intent on capturing the vast amount of Force knowledge and tomes that had been collected there over the millennia. Armed with a number of Mandalorian warriors, as well as their army of Krath soldiers, Qel-Droma and Kun stormed Ossus, taking advantage of the confusion and chaos surrounding the devastation headed for the planet.

Following their initial invasion, both Sith Lords were involved with various skirmishes, until Ulic was confronted by his brother Cay, who was attempting to turn Ulic back to the light side. The two brothers eventually battled, and the resulting fight saw the death of Cay Qel-Droma at the hands of Ulic. Nomi Sunrider, devastated by having witnessed the death of Cay, managed to use her powers to strip Ulic from the Force. Finally realizing how he had allowed the dark side to manipulate him, Ulic repented and offered to lead the Jedi to Kun's hidden fortress on the jungle moon of Yavin 4.

Text and facts from the “Battle of Ossus (Great Sith War)” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.