"The darkness beneath."
- —Book's tag-line
Tallarn: Ironclad is a limited-edition release novella in the Horus Heresy Series, released as a Black Library Exclusive in hardback format. Tallarn: Ironclad has since been released as a non-limited hardback, an ebook, and as an audiobook (MP3).
The Battle of Tallarn rages between the Traitor Iron Warriors and the Imperial Army. A carpet of armour covers the surface of the toxic planet: Dreadnoughts versus tanks versus Titans. But what secret purpose drives the Iron Warriors onwards to war?
The following is the chronological order of the Tallarn Series story arc set within the Horus Heresy:
- Black Oculus
- Tallarn: Siren
- Tallarn: Executioner
- Tallarn: Ironclad
- The Eagle's Talon
- Iron Corpses
- Tallarn: Witness
The Tallarn Series begins shortly after book twenty-three, Angel Exterminatus.
Tallarn: Ironclad was originally marketed as the first Horus Heresy Series Limited-Edition novel, however it is both much shorter than a novel and much longer than a novella, at 240 pages.
- Tallarn: Ironclad by John French