Alliance Battle Platforms

Created as an early type of alliance war vehicle in 2234, the Battle Platforms were hulking tank-like vehicles the size of buildings converted from mining rigs and other large indistrial machinery. These battle platforms were then fitted with large artillery turrets and armour so thick that they still hold the record for most heavily armoured ground vehicle in Galactic History.
Usually crewed by a team of 20-30 including engineers, drivers, mechanics and artillery crew, a battle platform's presence on a battlefield meant that the Alliance were deploying their best assets to stop an enemy. It took some time for sirasions to form an effective counter to them, coming in the form of gigantic land mines to disable the treads, or the powerful Warscythe droid that was specifically designed to stop them.
Each Battle Platform was named like a ship, and was a rallying point for many soldiers across the many brutal battles that defined the early years of the Alliance ground forces. The Warhammer-class Battle Platform gained particular fame, being the first one designed and the most produced of all Battle Platforms. Names such as the Tidal Surge, Lance of Dusk and Furioso have come up in battle accounts as having turned the tide against imperial forces many times over.
However, the slow speed and large amount of logistics they required was prohibitive to support long term, and over time the battle platforms were slowly retired or stopped being replaced, with the last Warhammer Platform, Spartacus IV, being launched in 2262.
As alliance tactics changed and adapted, some army units adapted their old battle platforms for other uses, such as super heavy troop transports, mobile command bases or cargo haulers on toxic and dangerous worlds. Others that were rendered immobile were scavenged for parts and ammo then left on the battlefield, as it was almost impossible to move them if the treads were too damaged. Some were used as permanent defensive bunkers, but most simply sat immobile, and some have even become small hills as nature has reclaimed the land. Some of the Battle Platform factories were large enough to serve as planetside repair bays for small starships, and trading posts have been created around abandoned Battle Platform repair gantries.
On the rocky world of Githrinka VII, a large battle took place where 9 Warhammer Platforms attacked an imperial fortress that was mining materials for protosteel, but all 9 battle platforms fell to a detachment of warscythe droids. After the Imperials left, the native Githanka peoples moved the wrecks of the old vehicles into what would become the planet's capital of Hri'Thoh'Ga (translated as 9 Metal Hills).
No Battle Platforms operate in modern alliance service, and the only operators are a few planetary defence forces and a few lucky pirates. Rumour has it that there are some sat in a storage vault somewhere, though this claim has never been sustantiated.
Battle Platforms represented the first successes against the Sirasions, that even though they became obsolete, are a symbol of defiance and steadfast determination, with some experts saying that the discarded hulls of these mighty war machines will outlast all the current galactic civilisations as buried relics of a long-forgotten war.