The All Terrain Defense Turret (AT-DT) was a bipedal walker used by the Galactic Empire. It was a slow walker due to the size of its main cannon, which fired a massive shot that exploded on impact. While firing, it was rendered immobilized. It was vulnerable to anti-vehicle weapons as a result of its light armor. It also possessed a front armor plate with artillery flashback shielding. It was half the height of the All Terrain Scout Transport (AT-ST) and like the AT-ST had a flap to cover the peephole in case of heavy fire.
In 10 BBY, during the Mimban Campaign, several Imperial AT-DTs were deployed on Mimban by the 224th Imperial Armored Division to fight against the forces of the Mimbanese Liberation Army. They were delivered to the battlefield by Y-45 armored transport haulers.
Sometime prior to the Galactic Civil War, Lando Calrissian and L3-37 met with an Er'Kit arms dealer and acquired a shipment of All Terrain Defense Turrets. Calrissian and L3, however, were ambushed in the Halthor sector when an Imperial interdictor dropped out from hyperspace. As a result of the ambush, Calrissian lost the entire shipment.
After the Battle for Tatooine, the rebel cell based on Tatooine came into possession of Calrissian's holorecordings, including Holojournal Entry 1983712, and received chatter from the criminal underworld of the older and heavily-armed AT-DT walkers being utilized. Saponza deduced that someone must have found Calrissian's shipment, and that people would be hunting for the rest of the cargo. Saponza and his partner embarked on a mission to recover Lando Calrissian's shipment.
During the Galactic Civil War, the Rebel Alliance utilized stolen AT-DTs and re-purposed them to suit their needs. Rather than being standard gray like the AT-DTs used by the Empire, the Rebel Alliance's had a dark gray and orange-red color scheme with a touch of white.
Behind the scenes
The first footage of the All Terrain Defense Turret was shown in the Solo: A Star Wars Story official trailer on April 8, 2018. The AT-DT design started out as a German Flak 8.8 cm anti-aircraft gun on the body of an All Terrain Scout Transport, with the concept and model built by Mark O'Kane.
- Star Wars: Force Arena (First identified as All Terrain Defense Turret)
- Solo: A Star Wars Story
- Solo: A Star Wars Story: Expanded Edition
- Solo: A Star Wars Story: Expanded Edition audiobook
- Solo: A Star Wars Story: Meet the Crew
- Lando - Double or Nothing 5
- Star Wars: Commander (First appearance)
- "In Service to the Empire"—Empire Ascendant 1 (Wreckage only) (In flashback(s))
- (First pictured)
- Solo: A Star Wars Story The Official Guide
- Ultimate Star Wars, New Edition
- Starships and Speeders
- "Imperial Troops" – Star Wars Encyclopedia (Picture only)
- Star Wars: Battles that Changed the Galaxy