The invasion of Belsavis, also known as the Belsavis prison break, was a battle that occurred during the Galactic War between the Galactic Republic and the Sith Empire in 3641 BBY after the Empire discovered the location of the Belsavis prison, a top-secret Republic penal colony on the planet Belsavis. A small strike team followed by orbital bombardment saw the Republic prison heavily damaged, and the Empire incited riots throughout the complex as they worked to free important prisoners such as the Sith Lords known as the Dread Masters. Unbeknownst to the Empire, the attack on Belsavis was a distraction to hide the efforts of Executor Krannus, who sought to destroy the entire world for the Sith Emperor but was stopped by the Jedi Knight known as the Hero of Tython.