Voss Prime

Voss Prime is the closest forge world to Armageddon, called the Right Hand of Mars, sitting on the mineral-rich Mordan Belt. It builds ships, aircraft and guns at Crusade-era volume, and it still cannot quite master plasma. Daemons hit it in the Noctis Aeterna; Calgar later mustered Operation Imperator here for the Fourth War. Placement is low confidence.