Why don't we just let them take each other out ? Because if we can help the Dark Empire there might be a chance where we can negotiate a treaty. And the Imperial Armada? It is led by the Emperor's Great Grandson so no. And the Dark empire is controlled by the Recent Emperor's Adopted Son? You rather Be hand in hand with a Man who's grandfather who manipulate the Jedi of old?
– Grand Master Katie Zos and Jedi Champion Natalie NexusThe Second Imperial Civil War was a war between The Dark Empire and The Newly Risen Imperial Armada. It was ended when both side was attacked by The Sith Underworld.