Liberation of Kashyyyk

"C'mon, Chewie. Set new coordinates. It's time to get you home."

- Han Solo to Chewbacca, on the way to liberate Kashyyyk

During the Galactic Civil War, the New Republic liberated the Wookiee homeworld of Kashyyyk from the rule of the Galactic Empire. Chewbacca, a Wookiee warrior in the New Republic, helped the Republic forces liberate his planet.

Behind the scenes
The liberation of Kashyyyk was first mentioned in the 2015 reference book Star Wars: The Force Awakens: The Visual Dictionary. Its origins were first referenced in the 2015 novel Aftermath.