Tales of the Jedi is a series of comic books that published by Dark Horse Comics between 1993 and 1998. They are part of the fictional Star Wars expanded universe, and cover the Great Sith War and the Great Hyperspace War. The series represented the earliest chronological Star Wars stories until the publication of the Dawn of the Jedi series of comics and novels.
The first books released covered the Great Sith War (4,000 BBY, or Before the Battle of Yavin). The latter were prequels that covered the Great Hyperspace War, which happened a thousand years earlier.
The Great Hyperspace War was instigated when two Republic hyperspace explorers accidentally crash-landed on the Sith graveyard planet Korriban during the funeral procession of Marka Ragnos. His successor, Naga Sadow, provoked war with the Republic, and installed himself as the leader of the Sith Empire. He fought not only the Republic, but the forces of his chief rival, Ludo Kressh, and was forced to destroy his own fleet to cover his escape. Sadow landed on Yavin IV and constructed vast temples with the labor of his Massassi warriors.
Six hundred years later, 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.