The WT-1 Walking Tank was a light walker based on the Espo Walker 91 and was used by the Imperial Army of the Ingzan-Bregaran Empire and the Hyaxnox Colonial Force of Hyaxnox Colony In 1,028 ABY the Empire used these walkers against the Hyaxnox Republic, the performed well against the Hyaxnox Defence Force, but they were weak against rocket launchers, so WT-1 pilots decided to make rocket troopers priority targets since they did the most damage against the WT-1s. After seeing how weak WT-1s were against rockets and small arms, IBIAVY developed the WT-2 Walking Tank, this one was based on the AT-PT.