The Sicaran Battle Tank is one of the rarest of sights on the blood-soaked battle grounds of the late 41st Millennium, for precious few examples of this highly advanced, and ill-understood, engine of war survived the Horus Heresy. Some tech-savants hold that the Sicaran was the most common of a family of armoured vehicles that entered service at the end of the Great Crusade, and that it was commissioned by the genius of no less a being than one of the Emperor's Primarchs. If this is true, it reveals a dark heritage indeed, for it appears that those Legions that remained true to the Emperor received scant quantities of the Sicaran, while those who stood by the Warmaster received the vehicle in greater numbers. So rare is the Sicaran, in fact, that numerous Tech-priests and even Techmarines