Second Sith Civil War (True Sith War)

"There are many factions within the Sith, each attempting to take what little remains from the Jedi Civil War."

- Visas Marr

Occurring just after the First Jedi Purge, the Second Sith Civil War was an event that served as the final destruction of Revan's Sith Empire. Following the First Sith Civil War, the Sith remnants were scattered and disunified. By 3,952 BBY, however, a triumvirate of Sith Lords – Darths Traya, Nihilus, and Sion had risen to assume power over the Empire's remains. Nihilus and Sion turned against Traya, exiling her. She then sought to use the Jedi Exile in her plans to destroy the Sith, the Jedi, and the Force.

Following the deaths of the Sith Triumvirate on Malachor V, the destruction of the Trayus Academy, and the foiling of their plot to seize Onderon and destroy Telos IV&mdash;and by extension, the Galactic Republic&mdash;the leaderless remains once more turned on each other, eventually destroying what little remained of Revan's Sith Empire.

However, records indicate that at least one Sith Lord bearing the title of "Darth" survived, if for nothing else, to train a Sith apprentice, ensuring the continuation of the "Darth" line until Darth Ruin's time.

Legacy
Because the Second Sith Civil War served as the final destruction of Revan's Sith Empire, it provided yet another reason for Darth Bane to have established his Rule of Two many millennia later. With only two Sith in the galaxy at any one time, it would prevent a disaster such as the two Sith Civil Wars from ever happening again.