All Terrain Armored Cargo Transport

The All Terrain Armored Cargo Transport (AT-ACT) was a larger version of the standard All Terrain Armored Transport combat walker that featured a dedicated cargo bed for the transportation of heavy building materials or combat munitions. It was deployed at major Imperial construction projects, such as shipyards and sprawling research installations.

History
At least four AT-ACTs were present on Scarif in a battle against a squad of Rebel soldiers.

Behind the scenes
The first footage of the AT-ACT was shown in the Rogue One: A Star Wars Story teaser trailer on April 7, 2016. The walker was identified as AT-ACT in a preview of the 2017 reference book Rogue One: A Star Wars Story: The Official Visual Story Guide on May 17, 2016. The full name was first revealed in the third episode of The Star Wars Show on May 25, 2016.

Appearances

 * Rogue One: A Star Wars Story