I had this little walker standing around here for some time, so I thought i´d share it here.
"AT-PTs were made to take single troopers into intense combat situations on their own. They stood only three meters tall, and were driven by AT-PT pilots.
The AT-PT was--compared to its intended threat, enemy soldiers--heavily armored, enough so that most small-arms fire couldn't penetrate the craft's armor. The walker was armed with twin blaster cannons and one concussion grenade launcher, which were only effective against infantry. The walker's superior agility made up for its light armor (in comparison to most other cavalry units)." - wookieepedia