The Assimilation of Onderon was the battle that sparked the war between the New Republic and the Death Watch in 18 ABY. After a demand to surrender was rejected, the Death Watch attacked Iziz and made their way into the Governor's Palace. After a short battle, Governor Kira surrendered to the Death Watch, giving leadership to the leader of the Death Watch, Theta. With Onderon at his command, the Death Watch were ready to truly start the war.