The Tionese War was a war fought between the young Galactic Republic and the Honorable Union of Desevro & Tion from 24,000-23,900 BBY. The Tion Cluster had become a largely-disunited backwater in the thousand years that had followed the defeat of Xim's empire, and the Cluster's leaders saw a rapid conquest of the Republic and the acquisition of its technology as their salvation. The Union attacked the Republic without warning, and the Republic was initially unprepared for the Tionese invasion and suffered multiple defeats. However, its superior industrial might and the aid of the Jedi Order allowed it to eventually subjugate Tionese space after a century-long conflict.