Ultramarines

Ben Counter

A compact void-war Heresy entry built around an Imperial pursuit of a massive Word Bearers threat moving toward Ultramar.

Dan Abnett

A decisive Ultramarines and Word Bearers Heresy novel that turns a planned campaign into a brutal lesson in betrayal.

Gav Thorpe

A modern-era novel that puts Space Marines and Necrons into the Indomitus Crusade frame, giving the map another early-M42 anchor.

Guy Haley

A central modern-era novel about Guilliman's returned Imperium facing strategic, political, and daemonic pressure in Ultramar.

Guy Haley

The Plague Wars escalate as Ultramar becomes a strategic and ideological test case for the revived Imperial order.

Guy Haley

The Dark Imperium trilogy closes with the Plague Wars pushing into questions of faith, power, and what the returned primarch can actually fix.

Nick Kyme

A compact Space Marines versus Orks war story that fits the atlas as a straightforward battle novel rather than a deep series commitment.

Laurie Goulding

An anthology of short fiction set in the aftermath of the devastating betrayal on the world of Calth, exploring the underground war and survival amid the ruined planet. The stories expand on events introduced in earlier Ultramarines-focused novels and feature multiple authors. Supplementary reading that enriches the Calth storyline rather than driving the main plot.

Dan Abnett

A mid-Heresy Imperium Secundus anchor that gathers major loyalist figures and shows how the war fractures command, certainty, and communication.

Guy Haley

Set on the world of Sotha, this novel centres on a mysterious xenos beacon device guarded by the Ultramarines during Roboute Guilliman's effort to hold the Imperium Secundus together. The Night Lords descend on the installation, turning the story into a tense siege with high stakes for the loyalist cause.

Gav Thorpe

A Dark Angels-focused Horus Heresy novel set during the era of Imperium Secundus, where the Legion is scattered across many systems and Lion El'Jonson governs as Lord Protector of Ultramar. Old rivalries within the I Legion and the Lion's ruthless methods strain the fragile alliance of loyalist primarchs gathered in the realm of Ultramar. It deepens the Dark Angels' internal politics and the secrets of their command.

David Annandale

A Horus Heresy novel in which the loyalist primarchs confront the collapse of Imperium Secundus and resolve to break through the warp storms separating them from Terra. Guilliman, Sanguinius, and the Lion press their fleets into the perilous Ruinstorm in a desperate bid to reach the Emperor before the war is lost. It serves as a major turning point closing out the Imperium Secundus arc.

Nick Kyme

The eighth Dawn of Fire novel draws the series' threads toward a confrontation with one of the Warmaster's schemes, following loyalist agents and Ultramarines against rival Chaos acolytes vying for the favour of the Dark Gods. It raises the stakes of the wider conflict as ambitious servants of Chaos reach for an ancient power.

Graham McNeill

The debut Ultramarines novel introduces Captain Uriel Ventris of the Fourth Company, deployed to a politically fractured world where Imperial rivalries mask a far deadlier, ancient menace stirring beneath the surface. A classic, accessible entry point into Space Marine fiction that establishes Ventris as a hero willing to bend the rigid Codex Astartes.

Graham McNeill

In the second Ultramarines novel, Uriel Ventris and his Space Marines join a desperate defence of an Imperial system against a vast, encroaching alien swarm. The book is a large-scale war story of attrition and command, deepening Ventris's character as the Imperium faces a relentless devouring foe.

Graham McNeill

The third Ultramarines novel sends Uriel Ventris on a grim penitent journey into hostile, Chaos-tainted territory, far from the support of his Chapter. A darker, more harrowing chapter in the saga that tests Ventris against the horrors of the Traitor Legions and a daemon-haunted world.

Graham McNeill

The fourth Ultramarines novel follows Uriel Ventris as he fights to return home, only to be drawn into the troubles of a beleaguered Imperial world burdened by a dark legacy. It continues the series' exploration of duty, loyalty, and the cost of straying from the Codex Astartes.

Graham McNeill

A Graham McNeill novel following Captain Uriel Ventris of the Ultramarines as he returns to defend an Imperial world against a massive Tau invasion. It sits in the back half of the Uriel Ventris saga, picking up after his exile arc and continuing his struggle to prove himself a true son of Ultramar.

Graham McNeill

Graham McNeill's climactic Ultramarines novel in which Uriel Ventris and his Chapter face a sweeping assault led by an old Iron Warriors nemesis. It serves as a capstone to the original Uriel Ventris series, resolving long-running threads of duty, rivalry, and redemption.

Graham McNeill

A later entry in Graham McNeill's Uriel Ventris chronicles, originally released as an audio-format story, following the Ultramarines into renewed conflict on and around the world of Calth. It revives the Uriel Ventris line for modern 40k continuity, blending personal command drama with battlefield action.

Phil Kelly

A Space Marine Battles novel depicting the Imperium's Damocles Gulf campaign, pitting Ultramarines against the expanding T'au Empire. It is notable for portraying iconic T'au commanders early in their careers, set against the disciplined fury of the Adeptus Astartes. A solid pick for readers who enjoy clashing-ideology war stories featuring both factions.

David Annandale

This entry in the Primarchs series follows Roboute Guilliman as he campaigns at the height of the Great Crusade, balancing the relentless demands of conquest with the methodical statecraft that will one day shape Ultramar into the Imperium's model realm. It explores his rivalry with a rival warlord and his belief that an empire must be built to endure rather than merely won, revealing the temperament that separates him from his more impulsive brothers.

Paul Kearney

When a vast space hulk drifts into the Ultramar system, Marneus Calgar leads an Ultramarines boarding force into its labyrinthine, lightless interior to uncover what ancient horror lies at its heart. The claustrophobic expedition becomes a slow-building nightmare as the line between hunter and prey blurs aboard the derelict.

Darius Hinks

On the fortress world of Regium, plagues and nightmares herald the approach of a new tendril of Hive Fleet Leviathan, and Lieutenant Castamon's Ultramarines must hold the line against the swarm. As an unnervingly cunning Tyranid intelligence picks apart their defences and minds, an Apothecary's research into xenos biology may be the planet's only hope of survival.

Dan Abnett

A fleet-action novella tied to the graphic novel of the same name, following the Ultramarines starship Macragge's Honour as it answers the Word Bearers' treachery in the void above Calth's wider war. Captain and crew wage a desperate ship-to-ship struggle to make the traitors pay for the slaughter of the XIII Legion, turning a single vessel into a symbol of Ultramarian defiance.

Rob Sanders

In the burning arcologies beneath Calth, Captain Steloc Aethon leads survivors of his Ultramarines company through the subterranean Underworld War against the Word Bearers. He must wrestle with his own consuming desire for vengeance even as he tries to deliver his brothers to victory and escape the deadly solar flares scouring the world above.

David Annandale

Word Bearers chaplain Kurtha Sedd descends into the caverns of Calth during the Underworld War, haunted by the humbling of his Legion at Monarchia and the doubts it left behind. Embracing the darkness his faith demands, he marches toward a fateful clash with an Ultramarine he once called brother.

Nick Kyme

Set on Calth in the underground war that followed the Word Bearers' betrayal, this audio-drama-derived tale pits Ultramarines against the traitor forces lurking in the dark. It centres on a grim siege of attrition where faith and discipline are pushed to the breaking point.

Nick Kyme

An Ultramarines patrol vessel is hurled off course by the cataclysm tearing the galaxy apart and crashes on an ice-bound world far from home. Stranded and cut off, the surviving Space Marines must hold the line against horrors closing in while desperately seeking a way back to the fight. A survival-driven tale set against the backdrop of the galaxy's great sundering.

Paul Kearney

Chapter Master Marneus Calgar travels to the remote frontier world of Zalidar on a routine goodwill visit, only to find it overrun by a massive Ork invasion. Cut off and outnumbered, Calgar and his Honour Guard must fight across hostile jungle to reach a beleaguered city and hold its walls against the greenskin tide. The novel dramatizes the legendary stand at Zalathras that cemented Calgar's reputation.

Ben Counter

When a Tyranid hive fleet is detected dangerously close to the Sol System, the Ultramarines deploy in force under their legendary Chaplain Cassius to find and annihilate the threat. Facing overwhelming odds, Cassius's iron faith and impetuous zeal are tested as much as his battle-brothers' resolve. The novel is a portrait of an uncompromising champion of the Codex amid relentless xenos warfare.

Andy Smillie

Ultramarines and Word Bearers muster together at Calth in the fragile hope of healing the rancour left by the burning of Monarchia. As the two proud Legions gather, a captain's obsession and the lurking threat of treachery turn a moment of reconciliation toward catastrophe, told through interwoven past and present.

Nick Kyme

A covert scheme unfolds to bring ruin upon Ultramar, drawing the warriors known as the Red-Marked to the moon of Bael. Tied to Aeonid Thiel and the defence of the Ultramarines' realm, the story is a tense thread of infiltration and sabotage amid the wider war against the Warmaster.

Ian St. Martin

In the turbulent aftermath of the Great Rift's opening, an Ultramarines force defends the worlds of the Realm of Ultramar against the rising tide of Chaos. As fresh Primaris reinforcements join the old guard, questions of brotherhood, tradition, and what it means to be a Space Marine come to the fore.

Gav Thorpe

As the Word Bearers' treachery sets Calth ablaze, traitor god-engines of the Legio Fire Masters march to butcher the fleeing civilians of the city of Ithraca. Standing against them are the dwindling loyalist Titans of the Legio Praesagius, who choose to make a doomed stand even as the Ultramarines are scattered and lost. A story of towering war machines and sacrifice during the Battle of Calth.

Rob Young

A Chaplain of the Ultramarines upholds the rites and discipline of his Chapter as war demands both faith and fury. A Space Marine story of duty, ritual, and command.