Battle at a delving citadel

During the conflict known as the Shu-Torun War, the armies of the Galactic Empire fought against a delving citadel that was under the control of insurgent ore-dukes. Darth Vader, the Sith Lord, commanded Tulon Voidgazer, a cyborg, to obliterate the citadel with the use of explosive drones, an act that filled Queen Trios with dread.