The Mission to Bastion, also known as the Battle of Bastion, was where members of the Sith Order traveled to Bastion and completed their takeover of the Imperial Remnant and formed the Sith Empire. It included the fall of the Imperial Remnant and the betrayal of Stormtroopers loyal to the Remnant and Stormtroopers who pledged alligiance to Sith Order. It became known to the New Republic as the Battle of the Stormtroopers refering to the varius Stormtrooper vs Stormtrooper battles on the planet.