Battle of Zakuul

In the aftermath of Empress Vaylin's death during the Assault on Odessen, the Eternal Fleet was left without a commander, reverting it to its original function of extermination, bombarding Dromund Kaas, several Core Worlds including Coruscant, and blockaded Zakuul. Realising that the Eternal Throne needed an occupant to keep the Fleet docile, the Alliance coordinated themselves to break the blockade on Zakuul and reach the Throne.

The Alliance succeeded in taking the Eternal Throne and pacifying the Fleet, but after the Outlander took the Throne, Vitiate revealed his intentions of taking over the Outlander's body to make them his new vessel. However, the Outlander was able to defeat Vitiate and, along with the rest of the Emperor's family, finally killed him.