The Second Triumvirate War was a war between the Galactic Federation Triumvirate and the One Sith Empire. The war lasted between 1000 ABY and 1015 ABY, a total of 15 years. The conflict was ultimately the culmination of a 860-year grudge held by survivors of Darth Nihl's Sith Empire against the Triumvirate for their defeat in the First Triumvirate War.