
Part of Series
A Primarchs audio drama During the Great Crusade, Primarch Perturabo leads a newly raised unit of his Iron Warriors in battle, teaching them the difference between stone and iron – with the Imperial Fists unwitting tutors. The 33rd Grand Battalion of the Iron Warriors, newly raised and seeing battle for the first time, have the honour of the primarch himself, Perturabo, leading them. But the Hammer of Olympia is there for more than just battle – he is evaluating his new officers and deciding their fates. And with a force of Imperial Fists allied to their cause, Perturabo sees the perfect opportunity to teach his new warriors the difference between the stone of the VII Legion and the Iron of his own.
Author

Robbie MacNiven is a Scottish author and historian. His published fiction includes over a dozen novels, many fantasy or sci-fi works for IPs such as Warhammer 40,000 and Marvel's X-Men. He has also written two novellas, numerous short stories and audio dramas, has worked on narrative and character dialogue for multiple digital games (SMITE: Blitz and Age of Sigmar: Storm Ground), has written the colour text for multiple RPG rulebooks and has penned the scripts for two graphic novels and two comics, for Osprey Publishing and Commando Comics respectively. In 2022 his X-Men novel "First Team" won a Scribe Award. On the non-fiction front, Robbie specialises in Early Modern military history, particularly focussing on the 18th century. He has a PhD in American Revolutionary War massacres from the University of Edinburgh - where he won the Compton Prize for American History - and an MLitt in War Studies from the University of Glasgow. Along with numerous articles for military history magazines he has written four books on different aspects of the American Revolutionary War, three for Osprey Publishing and the latest for Helion Books. He has also written the scripts for eight episodes of the hit YouTube educational channel Extra Credits. Outside of work and writing, his passions include re-enacting, gaming, and following Rangers FC home and away.