AT-CT

The AT-AT (All Terrain Armored Transport ), designed to favor "fear over function", can carry five speeder bikes and 40 Imperial Stormtroopers. The walkers themselves carry two blasters and two laser cannons. Their armor is resistant to standard blaster weapons; however, the "neck" column of the walker holds no such invulnerability and, if shot, can cause the entire walker to be destroyed.
Star Wars guidebooks describe the AT-ST (All Terrain Scout Transport) as a "reconnaissance or defensive vehicle that is lightweight and built for speed". Their agility allows them to defend the slower AT-ATs or support other Imperial ground forces. They are 8.6 meters tall and seat a pilot and co-pilot. AT-STs are armed with laser cannons on the "chin" and sides, feet claws for destroying small defenses and side-mounted concussion missile launchers.

The AT-AT and AT-ST's predecessor, AT-CT (All Terrain Canine Transport), is depicted as an assault vehicle that was supposed to appear at the Battle of Geonosis in Attack of the Clones and in various Clone Wars media. Its four legs and flexibility increase its speed but its mobility and stability are affected by its attitude. It has been known to become depressed after the completion of the droid loading. It will lay down on the floor and mope. The canine is armed with doggie slobber, a powerful projectile poot, feet claws for any Jedi and Republic Forces that like to hide like chipmunks and heavy aromatic armor. Like his counter part, the AT-AT, the AT-CT has a weakness in the neck area. Unfortunately, the droids are scattered before reaching the battle when the AT-CT gets an itch. This made the AT-CT useless as an attack vehicle, but still able to lend a voice to Chewbacca.