The '''Caladius''' is a type of [[Imperial]] [[Grav-Tank]] used by the [[Adeptus Custodes]] during the [[Great Crusade]] and [[Horus Heresy]].

The Caladius pattern grav-tank was often deployed in situations requiring the heaviest of weapons the Legio Custodes could bring to bear. Well-protected and highly maneuverable, it was perhaps the most powerful armored unit of its size in the [[Imperium]]’s forces, utilizing technologies and systems derived not only from the [[Dark Age of Technology]], but from developments made as a result of the Great Crusade’s two centuries of warfare.{{Fn|1}}