The conflict known as the Sixty Hour War took place at Derilyn during the initial period of the Galactic Civil War. After the Galactic Empire was formed, the people of Derilyn were greatly angered by the actions of Palpatine, and their stance was voiced by Senator Wuxod. Wuxod then vanished, and on the first of Fifthmonth, Imperial forces launched an invasion of Derilyn.
The planet was assaulted by six Imperial Star Destroyers, along with TIE fighter squadrons, and a full sector army; the city of Paran was obliterated by orbital bombardment. The Derilytes fought back, and the engagement continued for a period of seventy-two hours. Paran after its destruction. Following Derilyn's defeat, several rebellious planets situated in the Elrood sector yielded to the Empire. In the wake of Paran's destruction, a Derilyte resistance organization, known as the Friends of Paran, came into existence.