Battle of Korriban

The Battle of Korriban was a major event during in which Alan Ramsay revealed to be back from the dead. This battle was an attempt by Alan Ramsay to crush the Imperial Remnant in favor of his newly created Sith Empire.

Behind the scenes
Korriban is also the location of Darth Krayt's band of Sith, it is not known if Alan Ramsay was their leader or not nor if they died during the battle.