The Battle of Foerost marked the beginning of the conflict known as the Jedi Civil War.
Revan's fleet launched a sudden assault, entering the Foerost system with great speed. After swiftly defeating the surprised defenders, Revan and Malak made their declaration to the galaxy, revealing themselves as the new Sith Lords. They then seized control of most of the Republic Fleet stationed in the drydocks surrounding Foerost, inflicting a devastating loss upon the Galactic Republic.