During the siege, many commanders requested Shadowswords to combat the large number of heavy armour in the form of Titans and tanks from a renegade forge world. The only way the Imperium could maintain the war effort was to retrofit their Banehammers with magma cannons. While the magma cannon's range or area of effect are not the equal of the Shadowsword's volcano cannon, it can still deal a death blow to Titans. Since shells did not have to be carried and the retrofits did not take up too much space, the Doomhammer also gained a small transport capability.
|Vehicle Name:||Doomhammer||Main Armament:||Magma cannon|
|Forge World of Origin:||Ordana||Secondary Armament:||2 Lascannons, Twin-linked Heavy Bolter, 2 Twin-linked Heavy Bolters/Heavy Flamers.|
|Weight:||Unknown||Secondary Ammunition:||300 rounds and 4000 rounds.|
|Max Speed - on road||25kph||Gun Mantlet||Unknown|
|Max Speed - off road:||18kph||Vehicle Designation:||Unknown|
|Transport Capacity:||25 units||Firing Ports:||10 spots open|