During its time ruling the galaxy, the Galactic Empire engaged in a savage occupation of Kashyyyk, the homeworld of the Wookiees, following its conquest. The Wookiees were then enslaved and forced to work as laborers. Despite numerous rebellions from the Wookiees, the Empire responded with brutal force. Following the Battle of Endor, a significant Imperial force stayed on Kashyyyk, commanded by Grand Moff Lozen Tolruck. Tolruck maintained control over the local inhabitants through the use of inhibitor chips, and in addition to using them for slave labor and imprisoning them in the converted prison ship Ashmead's Lock, he even hunted Wookiees for amusement. The New Republic liberated Kashyyyk in 5 ABY, bringing an end to the Empire's reign there.