The Revanite Rebellion begins in earnest.
For centuries since his disappearance, Revan has drawn followers from across the galaxy. Most of his followers were content to explore the Force, as aspects of Light and Dark, as scholarly constructs, as theories.
But a splinter fringe saw the Force as an opportunity, and they used it to wage war on the entire galaxy, Republic and Empire alike. In the end, Revan was narrowly defeated by a combined effort between an unauthorized alliance of Imperial and Republic troops.