The All Terrain Mobile Artillery (AT-MA) was a model of four-legged base defense walker used by the First Order to defended Starkiller Base. While it resembled the All Terrain Armored Transport once used by the Galactic Empire in terms of size and weaponry, the AT-MA was primarily designed for defense, rather than transport or assault. Several of these walkers were deployed across the planet to protect its installations, and at least three of them were present during General Armitage Hux's speech before the destruction of the Hosnian system. Several All Terrain Mobile Artillerys could be stored in the ground vehicles storage area of a Resurgent-class Battlecruiser.