In the War for the Home Planet, Yisk was responsible for ordering the deaths of 25 Tooin soldiers and their commander holding out in the Leader's Stronghold during the Battle for Antoo, an order that was not taken lightly by Tooins and some Aan. Killing them only made the enemy stronger and soon the war took on a new front: space. Yisk amassed a fleet of Harnor-class Destroyers and chased outlying positions of Tooin forces heading towards the known edge of the Galaxy.