During the middle of the 41st Millennium a Magos from the Forge World of Lucius known as Nalax discovered the partial data remnants of a long-forgotten battle tank that was used during the Great Crusade. After many years of diligent study and cross-examination of ancient documents recovered deep within the archives of Lucius, Nalax was able to gather enough of the data to construct the Macharius. Nalax went to Mars and to the High Fabricator-General for approval to begin manufacturing the Macharius. The process of approval took nearly two hundred Terran years and Nalax himself did not live to see the outcome. After long testing and consultations with many other Forge Worlds, Lucius was finally sanctioned to start production by the Mechanicus. The tank was named after Lord Solar Macharius,