Assault on Kashyyyk The assault on Kashyyyk took place early in the Galactic Civil War on the Wookiee homeworld of Kashyyyk . The forces of the Galactic Empire assaulted the Rebel Alliance monitoring outpost that had been established in secret on the planet . The initial Imperial attack was repelled by the Rebels , forcing the Empire to initiate a second assault . This time , the Empire was successful in taking control of Kashyyyk , although some of the Rebel troops had managed to evacuate from the planet . Prelude . Some time prior to the Battle of Yavin , the Rebel Alliance had secretly developed and built a small outpost on the Wookiee homeworld of Kashyyyk , doing so right under the Galactic Empire ' s nose . The outpost consisted of a planetary communications array for monitoring local radio traffic as well as a barracks to house a small garrison . After a Rebel patrol squad sent into a nearby forest to perform a routine perimeter sweep disappeared , another patrol , Squad Three , was sent out to search for the lost unit . The disappearance of the Rebel squad was , in fact , part of a ploy set up by the local Imperial forces to discover the location of the hidden Rebel outpost . The Empire had deployed a communications jamming device in order to draw the Rebels out . The destruction of the device confirmed to the Imperial commander stationed there that there was indeed a Rebel presence , and an attack on the outpost was put into action immediately . Ground battle . After destroying the jamming device and restoring their communications abilities , all Rebel patrols were recalled in order to defend the base . When Imperial markings were discovered on the remains of the device , the commander was able to deduce that their existence had been compromised and that enemy forces were on the way . Soon afterward , an Imperial attack force consisting of TIE Maulers , stormtroopers , and All Terrain Scout Transports was able to advance upon and attack the Rebel outpost , having discovered its location . The attack was repelled , however , and the Alliance ground forces were able to move on to capture several Imperial landing zones deeper within the forest . Space battle . After the Rebels captured the final Imperial reinforcement point on the surface , the Imperial Navy sent a task force consisting of four " Tartan " - class patrol cruisers and two " Acclamator " - class assault ships plus their TIE / LN starfighter support . The Imperial ships entered the star system and destroyed the small orbiting space station , which the Rebels had occupied and refurbished only a short time before the battle ; though it was still in a dilapidated state , the station was functional enough to mount a meager defense . In the orbital exchange that followed , the station , along with a Rebel EF76 Nebulon - B escort frigate and several fighter and bomber squadrons , was destroyed . This action forced the Alliance to abandon Kashyyyk completely , retreating back to their base on the planet Bothawui . Aftermath . In the wake of the skirmish in orbit , the Empire sent a scouting force down the planet ' s gravity well to reclaim Kashyyyk after the Rebel Alliance had been forced to evacuate . The surviving Rebel forces had retreated to the main Alliance Fleet , which was stationed over Bothawui at the time . The Rebel leader Mon Mothma was relieved to see that there were survivors from Kashyyyk , but she explained to them that the credit - strapped Alliance was now in dire need of new sources of income if it was to have any chance of withstanding further Imperial assaults . The Rebels then proceeded to establish a new base on the planet Ryloth , but it was soon also discovered and subsequently overrun by an Imperial assault , thanks to data that the Empire had managed to obtain from the starship logs kept by a captured Rebel smuggler . A short time later , an Alliance Special Forces company was deployed to relieve another Rebel outpost present on the planet Tatooine , which had come under siege by the Imperial Navy and Army . Behind the scenes . This battle is one of two combat training levels in the real - time strategy video game " " , developed by Petroglyph and published by LucasArts in 2006 .