Ancient pacts sworn between the Adeptus Mechanicus and the Adeptus Astartes allow Space Marine Chapters to send those warriors with an affinity for technology to Mars to train and begin the long, arduous journey of becoming a priest of the Machine God. Without the passing on of such ancient technological lore, the Space Marines would be unable to make war. To begin his tutelage, a Techmarine-nominate takes ship to Mars. Bearing silvered seals of introduction, he passes through the Red Planet's Ring of Iron and deep into the hidden Forge Cities of the Mars. Here he is immersed in the ancient and jealously guarded lore of the Adeptus Mechanicus. He learns to master the tools of the Techmarine, which will allow him to visit miracles upon sundered technology. Few are the harms that a Techmarin