Great Sith War

The Great Sith War, also known as the First Sith War, one of the largest conflagrations of the Old Sith Wars, was a conflict the Sith Order and its allies, the Krath and the Mandalorians, waged against the Galactic Republic and the Jedi Order from 3,998-3,996 BBY.

Six hundred years after the Great Hyperspace War, fallen Jedi Freedon Nadd arrived on Yavin IV, and learned Sith sorcery from the spirit of Naga Sadow. He took his knowledge and the treasures of Sadow to the planet Onderon, where he used his acquired gifts to install himself as king. His spirit continued to advise his descendants.

Another Jedi, Ulic Qel-Droma, was sent to Onderon to mediate a conflict, where he met the spirit of Freedon Nadd, who told him he would become a Sith Lord. The prophecy came true when the Krath, a secret dark side society, attacked the Republic and injured Ulic with alchemically-treated shrapnel, and then injected him with dark side poisons that would ensure his fall.

Exar Kun left his master, Vodo-Siosk Baas, because his master would not let him learn about the dark side. He went to Onderon, where he learned of Freedon Nadd's tomb. Nadd's spirit told him to go to Korriban, where Nadd tricked him into accepting the dark side. They went to Yavin IV, where Nadd gave him a choice: surrender to the dark side, or die. Kun chose life. After learning about the dark side from Nadd, Kun destroyed him with a dark side amulet.

Exar Kun and Ulic Qel-Droma met on Cinnagar, and their battle was interrupted by the spirit of Marka Ragnos, who declared Kun the Dark Lord of the Sith, and Qel-Droma his apprentice. Together, they waged war on the Republic, stealing Jedi students from Ossus and subverting them to the dark side. Qel-Droma defeated Lord Mandalore, earning the services of the Mandalorian warriors, then raided Foerost, securing a fleet of warships.

Qel-Droma, with his combined Krath and Mandalorian forces, attacked Coruscant, but was captured when Aleema Keto abandoned him. Mandalore went to Kun and told him of Ulic's capture. Kun led a rescue attempt, and killed his former master and the Chancellor in the process. In retaliation, the Sith Lords caused Ossus's sun to go supernova after the battle at Kemplex IX, destroying countless Jedi artifacts. A significant battle between the Jedi and the Krath occurred in the Al'Har system, ending with at least one Jedi transport vessel crashlanding on Haruun Kal. Meanwhile, the Mandalorians attacked Onderon, but were repelled and forced into retreat to Dxun, where their leader was killed.

Before Ossus was destroyed during the planetary evacuation, Ulic's brother Cay tried to convince him to return to the light. Ulic cut him down, and then surrendered himself to his former lover, Nomi Sunrider, when she forever cut off his connection to the Force. Broken, Ulic surrendered to the Republic, and led them to Yavin IV, where Exar Kun committed a ritual that sapped the life from every Massassi on the planet to separate his spirit from his body and bind it to his temple.

Battles

 * Beast Wars of Onderon:
 * 3,998 BBY: First Battle of Onderon (end of Beast Wars)
 * Naddist Uprising:
 * 3,998 BBY: Second Battle of Onderon
 * 3,998 BBY: Third Battle of Onderon
 * Holy Krath Crusade (3,997-3,996 BBY):
 * 3,997 BBY: Battle of Basilisk
 * 3,997 BBY: First Battle of Empress Teta
 * 3,997 BBY: Battle of Deneba
 * 3,997 BBY: Dark Reaper Campaign
 * 3,997 BBY: Second Battle of Empress Teta
 * 3,997 BBY?: Battle of Ko Vari (Boonta)
 * 3,996 BBY: Battle of Kuar
 * 3,996 BBY: Battle of Foerost
 * 3,996 BBY: First Battle of Coruscant
 * 3,996 BBY: Battle of Al'Har
 * 3,996 BBY: Second Battle of Coruscant
 * 3,996 BBY: Battle of Vento
 * 3,996 BBY: Battle of Kemplex IX
 * 3,996 BBY: Battle of Ossus
 * 3,996 BBY: Fourth Battle of Onderon
 * 3,996 BBY: Battle of Yavin IV