The Deathhammer was a super-heavy main battle tank used by the Space Marine Legions of the Great Crusade and Horus Heresy eras in the late 30th and early 31st Millennia. The Deathhammer was developed from the same Standard Template Construct data recovered by the ancient Mechanicum as the Baneblade and Fellblade super-heavy tanks.
Unfortunately, little else is known about the Deathhammer pattern in current Imperial records, save that it was considered somewhat inferior to the other two similar designs.
- The Horus Heresy: Book One - Betrayal (Forge World Series) by Alan Bligh, pg. 224