The Self-Propelled Heavy Artillery (SPHA) walker was a modular heavy artillery unit used by the Alliance of Nations. It bore a resemblance to the smaller Republic stun tank also utilized during the Clone Wars. A Self-Propelled Artillery Walker (SPHA) had twelve legs that served as mobile support structures. Unlike smaller walkers, such as the AT-TE, SPHA units were unable to be carried into battle by LAAT/c gunships because of their large size and weight. Instead, they were deployed directly from landed Acclamator-class assault ships, which could carry 36 of the artillery platforms.Though the Axis of Empires uses their own version, the SPMA-T.