Warhammer Studio and Black Library Authors Collaborated to Build The Scouring Timeline

Before a single word of *The Scouring* was committed to the page, the lore writers at Warhammer Studio were already in the room. That foundational collaboration, revealed through a Warhammer Community feature published on 12 March 2026 to mark Black Library Celebration, pulls back the curtain on how one of the most ambitious post-Heresy narrative projects in Black Library's history actually came together.

From the Siege of Terra to the Great Scouring

The Horus Heresy concluded with *The End and the Death*, but the Imperium's story was far from over. What followed was the Scouring: the vengeful campaign to purge Horus' Traitors from the galaxy, a galaxy left shattered in the Warmaster's wake. Translating that sprawling, blood-soaked aftermath into a coherent series of novels required more than creative ambition. It required a shared map of time itself.

That process began years before *Ashes of the Imperium*, the novel that kicked off The Scouring series, ever reached readers. Andy, a member of the Warhammer Studio team involved in the project, explained the origins plainly: "It was really exciting to see the release of the first novel in Black Library's new series The Scouring, as work began on it several years ago, when the guys at BL first started talking about what might come after the Siege of Terra novels were concluded."

A Fascinating Exercise in Future History

The phrase that Andy used to describe the Studio's involvement is one that will resonate with anyone who has spent time building or consuming lore at this scale. "As part of the planning process the Warhammer Studio was involved right from the onset, and we soon found ourselves engaged in a fascinating exercise in future history!" The Warhammer Studio's lore writers, the same team responsible for the canonical backbone of Warhammer: The Horus Heresy, worked hand-in-hand with Black Library authors to nail down a timeline for an era that, until now, had existed in broad strokes rather than granular, year-by-year detail.

That kind of collaboration is rarer than it might appear. Black Library novels have always been informed by the Studio's established lore, but building an entirely new narrative era from the ground up, with Studio lore writers and fiction authors in active dialogue from the beginning, represents a more integrated approach than the series has seen before.

The Scouring Timeline: What We Know

The Warhammer Community feature published specific timeline entries that anchor The Scouring series in concrete in-universe chronology. The series spans a remarkable duration: "The Scouring lasted seven long years, as long as the Horus Heresy itself, so there are plenty of tales yet to tell and battles yet to fight!" Seven years of galaxy-spanning conflict, matched in length to one of the most documented eras in 40k lore, is an enormous canvas.

The timeline entries revealed in the feature trace events through 019.M31:

- Early 019.M31: *The Doom of Valhalla* marks one of the series' early narrative anchors, though details of its specific events remain to be revealed across the novels themselves.

- Mid 019.M31: *The Iron Cage.* This entry carries enormous weight for fans of the Iron Warriors. Perturabo ascends to Daemonhood before returning to Olympia to establish his so-called 'Iron Empire.' The two-year Siege of Olympia begins here, a grinding, protracted campaign that will play out across the timeline.

- Late 019.M31: *The Third Battle of Paramar* closes out the year's major events, the third confrontation at a location that has already seen devastating conflict during the Heresy itself.

Together, these entries paint a picture of a Scouring that is not a clean mop-up operation but a continuation of the same brutal, multi-front warfare that defined the Heresy, now fought across a collapsing empire rather than a conquering one.

Perturabo and the Iron Empire

Among the specific lore beats revealed, Perturabo's arc deserves particular attention. The Iron Warriors Primarch does not simply retreat into the Eye of Terror after the Siege of Terra. He ascends to Daemonhood and returns to Olympia, his homeworld, to establish what the timeline explicitly calls his 'Iron Empire.' The Siege of Olympia that follows is listed as two years long, meaning it stretches well into the 020.M31 bracket, threading through multiple future entries in the series. For a Primarch whose relationship with Olympia has always been one of the most psychologically complex in the entire Heresy canon, this return carries obvious narrative charge.

Characters Beyond the Primarchs

The Warhammer Community feature closes on a note that signals the series' broader ambitions. Beyond the Primarchs, whose fates have been the gravitational centre of the Heresy novels, The Scouring appears to be deliberately opening space for other figures. "I for one am really excited to read where the Black Library authors are going to take the various characters, not just the Primarchs, but the numerous other figures who no doubt will step out from their leaders' shadows in this new age, and where this could develop in the years to come." That framing suggests The Scouring will function as something closer to an ensemble saga than a pure Primarch-centred narrative, with the events of 019.M31 and beyond offering room for Legion veterans, remembrancers, Imperial commanders, and others to take centre stage.

Community Reaction and Campaign Book Speculation

Within the 30k community, the feature landed with immediate impact. A post in r/Warhammer30k by user Diocletian flagged the article with an addition that will interest anyone who plays the tabletop side of Horus Heresy: the suggestion that the feature "hints at Scouring era campaign books." The Warhammer Community piece does not explicitly announce any campaign books, but the detailed timeline structure, complete with named battles and specific in-universe dates, is exactly the kind of scaffolding that supports a tabletop campaign supplement. Whether that materialises remains to be seen, but the groundwork being laid on the fiction side would translate naturally to the gaming table.

A Note on the Timeline Dating

One detail worth flagging for the lore-literate: Lexicanum's page for the Scouring of Molech, updated on 12 March 2026 and citing the Warhammer Community feature as its primary source, places that battle in 017.M31, earlier than the 019.M31 entries presented in the feature itself. Both dates are drawn from sources that reference the same article, and the discrepancy has not been officially reconciled. It is possible the Scouring of Molech predates the main 019.M31 cluster of events covered in the feature, but confirmation from the full timeline documentation will be needed before that gap can be closed with confidence.

What is certain is that the Studio and Black Library have committed to a level of temporal rigour for this series that the post-Heresy era has never previously enjoyed. The exercise in future history that Andy described is already producing results, and with seven years of in-universe conflict mapped out and authors actively working within that framework, The Scouring has the architecture to become as definitive a body of work as the Heresy series that preceded it.