Sorry Ky, u're completely wrong here.
U should update your 'Guide of the Imperial Armament'. AT-AT's WERE the best a long, long time ago (not to mention in a galaxy far, far away).
Right now, the Imperial Groundforces use much more convenient (and much more powerful) vehicles. Cannot specify the details, u know, it's a public forum and the spies of the rebelscum :x could find it here.
Please report to your local commander (Azirafal?) for the update.
BTW: don't u think such an ignorance should be punished? What would Emperor say :?:
BountyHunter