Around 20 BBY, a joint Trandoshan/Confederacy of Independent Systems force mounted an assault on Kashyyyk, resulting in the destruction of a Jedi outpost.
Jedi Master Mavra Zane was tasked with training a group of Padawans at the Kashyyyk Jedi outpost around 20 BBY. They journeyed to the location aboard a Consular-class cruiser.
Following Master Zane's arrival at the Jedi outpost with the younglings, a joint attack commenced by a Confederacy of Independent Systems/Trandoshan alliance. To assist the Wookiees, the Padawans seized BARC speeders. They engaged Trandoshan Jungle speeders in combat. Reaching the nearby city, they successfully repelled the initial assault. Master Yoda then departed for Coruscant to secure reinforcements.
The second wave materialized more rapidly than anticipated. Zane instructed the Wookiees to board their Raddaugh Gnasp fluttercraft, however, these were obliterated. The younglings and Chewbacca commandeered a Flash speeder and battled against the Separatist NR-N99 Persuader-class droid enforcer and OG-9 homing spider droids. Ultimately, they destroyed an Ubrikkian floating fortress. The younglings and Chewbacca were then compelled to flee aboard the Star Runner.
They penetrated the orbital blockade led by the Nihilist, inflicting damage upon several Munificent-class star frigates and HCT-2001 Dragonboat-class Reugeot 905 freighters.
This assault is depicted during the Jedi Destiny segment of the 2012 video game Kinect Star Wars.