The Mark of Calth is a term that refers to two related phenomena that occurred in the course of the Battle of Calth during the Horus Heresy in the 31st Millennium.
The Mark of Calth is a term that refers to two related phenomena that occurred in the course of the Battle of Calth during the Horus Heresy in the 31st Millennium.
The Mark of Calth is a term that refers to two related phenomena that occurred in the course of the Battle of Calth during the Horus Heresy in the 31st Millennium.