Around the year 3660 BBY, a battle took place both on and in orbit of the planet Serenno amidst the Great Galactic War. Darth Malgus, a Sith Lord, instigated this conflict with the intention of capturing or killing Jedi Master Ven Zallow, who had established his headquarters within the villa belonging to the noble House Palerma located on Serenno. Master Zallow had launched attacks across the Sith Empire's territory during the preceding year, thus becoming the target of Darth Malgus's animosity. Even though the Imperial Armada successfully captured Serenno from the Galactic Republic, Master Zallow escaped the planet, denying Malgus his sought-after victory. Soon after their arrival, the Sith began occupying the world, but encountered resistance from the inhabitants of House Teramo and House Comprassi. These two Houses employed mercenaries to drive the Sith away, but all of these mercenaries were slain by Sith assassins acting under Malgus's orders.