Imperial Army Pilot

Imperial Army Pilots are the Galactic Empire's support personnel responsible for the operation and maintenance of a variety of vehicles, such as the AT-AT and AT-ST, within the Imperial Army. Imperial Army pilots are usually unarmed, but on occasion, senior officers will have a standard issue SE-14r Light Repeating Blaster, Thermal Detonators, Concussion grenades, and possibly even a Merr-Sonn V-6d mortar launcher. Imperial Army pilots usually don't wear armor due to the protection given by Imperial vehicles, but higher ranking officers often put on some protective armor before going into combat.

=AT-AT Pilots= Selected from hardened combat troopers, AT-AT pilots are specialized soldiers that are trained to pilot the All Terrain Armored Transport in blatant "shock" tactics, attacking their enemy in plain sight after having landed at great distances from their intended targets. AT-AT drivers typically work in teams of two, and they are in charge of everything from guiding the massive walkers over all types of terrain, to firing the AT-AT's powerful heavy laser cannons, to carrying out the orders given to them by the combat coordinator, who also occupies the cockpit. The task of guiding the walkers over uneven terrain is a difficult challenge, and to ensure that the pilots of these massive war machines are the best of best, they are put through many hours of simulation tests and similar instruction. AT-AT pilots are very similar in appearance to TIE Pilots, though they retain a color scheme that is reminiscent of clone pilot attire, being a light grey flight suit complete with webbing, along with white gloves, boots and helmet. Although not required in the pressurised environment of an AT-AT cockpit, the operators at the controls of an AT-AT utilize life support gear that ensures their survival in the event of a hull breach in a hostile environment.

Their helmets are connected directly to a vehicle's computer, allowing easy monitoring of its vital systems. The survival pack worn by these pilots is an advanced design which enables the suit systems and heater to run off a single power pack for up to five days without requiring a recharge. They wear driving gauntlets with a comlink for communication. They are usually armed with a blaster pistol and grenades. Like all AT-AT crews, the pilots live and work in their machines over much of each mission. It is common for them to even involve themselves in the maintenance of the walkers, reinforcing the theory that the crew is an extension of the walker and vice/versa. =Sources=
 * Wookieepedia