Dating death wiki
Ancient and incomplete archival fragments suggest that the Castraferrum Pattern was introduced in order to meet a range of tactical challenges.
The most common form of Dreadnought deployed in the late 41st Millennium is officially designated a Castraferrum Pattern Dreadnought.
The oldest Dreadnought in the Imperium, Bjorn the Fell-Handed of the Space Wolves, was a member of the Primarch Leman Russ' retinue and fought in the Horus Heresy when he was still whole of body, making him well over 10,000 standard Terran years old.
When the Dreadnoughts are not in use by their Chapter, they are placed back into the Chapter's Chapel in its fortress-monastery to sleep away the centuries in a form of suspended animation until they are needed once more.
Sustained and kept alive within the sarcophagus, the link between his physical being and the Dreadnought's systems is absolute and for the remainder of his life.
The Space Marine within the sarcophagus will control the robotic body of the walker and experience the outside world through a web of cyborganic neural links and sensors implanted within his life support systems.
The majority of Dreadnoughts in use by the Adeptus Astartes conform to the pattern known as the Castraferrum, of which the Mars Castraferrum Pattern Mark IV and Mark V are the most common.