Civil War on Kashyyyk

The Civil War on Kashyyyk was a short-lived war between the remnants of Darth Katos' Wookiee supporters and other tribes inhabiting the planet. The war was started soon after the news of Darth Katos' death reached Kashyyyk. Katos' supporters, lead by Chieftan Har'grah Tar'Grup, began to incite massive riots on the planets surface, one going as far as burning down a large area of a forest. Following the forest fire, many Wookiee Chieftans lead an attack against the supporters, thus starting the war.

Three Days at War
Har'grah Tar'Grup, Chieftan of the Na'Skhai Tribe, rallied the small amount of Wookiee's that continued to support the New Galactic Empire and Darth Katos and fortified his village. The Wookiee Chieftan lead riots across Kashyyyk, killing many Wookiees, and even setting fire to one of the many forests on the planet. Following this, Chieftan Kar'brin Ka'Nuca of the Buga Tribe rallied Wookies from across the planet and attacked Tar'Grup's village-turned-fortress. Although Tar'Grup had his village heavily fortified, his forces were still outnumbered. Tar'Grup seeked reinforcements from the New Galactic Empire, but the request was never carried out. After the three day battle, Ka'Nuca's forces infiltrated the fortress and killed Tar'Grup and the rest of the New Imperial supporters.