The Horus Heresy

The battle for 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?

After the war to save Ultramar from the traitor hosts of Horus ended, formerly disgraced Ultramarines Sergeant Aenoid Thiel believes that enemies still linger within the borders of the empire. Finding other men of purpose, fellow Space Marines known as the ‘Red-Marked’, Thiel wages a guerrilla war to root out these enemies and vanquish them for good. Following the threads of a previous mission, the Red-Marked arrive on the moon of Bael. There they find an underwater rigging station that has seemingly been abandoned.

As Calth burns, the Battle Titans of the Fire Masters legion take to the streets of the city of Ithraca, ready to massacre the fleeing civilian population in the name of their new, dark masters. But the remaining loyalist engines of the Legio Praesagius - the True Messengers - still stand ready to defend the Imperium, even in the face of almost certain death. With the nearby Ultramarines forces scattered and lost, the people of Ithraca must fend for themselves as gigantic war machines unleash apocalyptic weaponry across the ravaged skyline....

In the depths of Calth's arcology network, the Underworld War has raged for years. Aeonid Thiel, previously an honoured sergeant of the Ultramarines, once again finds himself in trouble. Pitted against the daemonic forces of the Word Bearers, he has no choice but to venture back to the ravaged surface and brave the deadly solar flares that have scoured all life from this world.

The Mor Deythan stand apart from their brothers of the Raven Guard Legion - indeed, there are many who would claim that they do not even exist. Blessed with the same powers of stealth and subterfuge as their primarch Corax, the self-styled Shadowmasters may slip through any battlefield, unseen and unheard, until they are ready to strike. Now, as the Legion mounts its attack on the forge-temples of Atlas, Brother-Sergeant Chamell leads his warriors on a vital, clandestine mission to strike at the enemy's heart.

Since the near-destruction of the Iron Hands, Raven Guard and Salamanders on Isstvan V, scattered warbands from these 'shattered Legions' have waged a guerrilla war on Horus' forces across the galaxy. Now, the crew of the Sisypheum are drawn into a covert assault on a hidden Alpha Legion outpost - an assault orchestrated by none other than the infamous warleader Shadrak Meduson himself. But what does Meduson really hope to make from such a bold move against the sons of Alpharius, arguably the undisputed masters of deception?

Long considering themselves persecuted by the rest of the Imperium, the apostles of the XVIIth Legion have courted sedition, betrayal and even open heresy for decades. But for Kurtha Sedd of the Third Hand Chapter, the Word Bearers' assault on Calth has proven...troubling. Drawn into the haunted shadows of the planet's underworld, the Chaplain and his devout brethren must now put aside all other concerns and continue to wage war against the Ultramarines, no matter the ultimate cost.

Before the Warmaster's betrayal, the primarchs and their Legions were a warrior brotherhood without equal. At Calth, a planetary jewel in Ultramar's crown, a great mustering is taking place. Two proud Legions gather in hopes of healing the discord after the notorious shaming of the Word Bearers at Monarchia. Captain Alcaeus of the Ultramarines plans on joining the muster but will not rest until the remnants of the Ghaslakh Empire are purged utterly from the galaxy, For honour and glory, he has sworn an oath to succeed.

After returning from Calth and the Underworld War, Sergeant Aeonid Thiel is summoned before his primarch Roboute Guilliman. The fragile peace of Imperium Secundus is threatened by traitor warbands left behind by the Shadow Crusade, and a new order of battle must be written.

Stranger things than xenos and mutants dwell in the dark places between the stars - things known only too well to the inhabitants of Davin. Cult priest Thoros calls upon the favour of his patron gods to aid him in casting out the pretenders and non-believers, for only the true disciples of Chaos can be allowed to rule the galaxy....

As the Great Crusade sweeps across the galaxy, the forces of the Imperium encounter a world held in thrall by the alien eldar. While the Iron Hands of Ferrus Manus and Mortarion's Death Guard battle against the hated xenos, it is the Salamanders who brave the deepest and most deadly jungles, encountering monstrous reptilian beasts and foul witchery along the way. Ultimately, it falls to their primarch Vulkan himself to thwart the sinister designs of the eldar, if the Legions are to liberate this world and bring illumination to its inhabitants.

When Horus' treachery was declared, the Iron Hands primarch Ferrus Manus sped to the Isstvan system with his elite forces to confront the traitors...and fell into their trap, losing the battle and his life. The X Legion warship Veritas Ferrum arrives in the Isstvan system in the second wave of Imperial forces. Battered by the foes and forced to retreat, the crew must make a difficult choice when survivors of the massacre ask for aid. Has the nascent war already started to claim the humanity of those involved?

Charged with a solemn duty by the primarch himself, Forgefather T'kell of the Salamanders prepares for what may well be his final journey. Along with a chosen few of the Legion's elite Firedrakes, he must bear the last seven of Vulkan's greatest weapons away to the secret vault known as the Wrought, putting them forever beyond the reach of treacherous enemy and well-intentioned ally alike.

On the doorstep of Holy Terra, the shadow of treachery still lurks. Upon a comet-shrine dedicated to the glory of Unity, a group of heretic Word Bearers prepare to return to the Solar System after being abandoned by their brethren - only the forces commanded by Sigismund, First Captain of the Imperial Fists, stand between the traitors and their goal. But will the legendary Templar's skill at arms be enough to prevail over this new enemy, or will the doubt in his heart prove ultimately to be his undoing?

The Shadow Crusade spreads across Ultramar, with the Word Bearers 34th Company falling upon the isolated world of Percepton Primus. As the fighting draws out into a programme of extermination, embittered commander Sor Talgron begins to question his part in Lorgar's grander scheme - for one who stood beside primarchs and high lords in the grand halls of the Imperial Palace, what glory can there now be in punishing Guilliman's upstart sons?

As one of the vaunted Crusader Host, Brother Crius stood as the representative of the X Legion upon the soil of Holy Terra, but when he learns of the death of his beloved primarch Ferrus Manus at the hands of the traitors, his stoic, mechanical grief imbues him with the strength and resolve to undertake a special mission on behalf of Rogal Dorn himself. Striking out into the stars, he searches for any signs of his lost Iron Hands brethren, hoping to bring them back to Terra to aid in the final defence of the Palace.

In surviving the horrors onboard the Eisenstein, Nathaniel Garro proved his courage and absolute loyalty to the Emperor. On his return to Terra, Garro is despatched on a mission of even greater importance - a mission given to him by Malcador the Sigillite himself. He soon finds himself back amongst the stars and on the fields of battle, thrust into a warzone where the Ultramarines are purported to be battling a greenskin invasion. Once again Garro must fight for survival, but now he also fights to achieve a higher purpose....

For more than 200 years, the armies of the Emperor of Mankind fought to reconquer the galaxy - led by the superhuman primarchs, the Space Marine Legions brought countless worlds back under the rule of ancient Terra. Now Horus, once honoured Warmaster and favoured son of the Emperor, has been corrupted by the whispered promises of Chaos. At his command the Imperium is torn apart by a terrible and bloody civil war, the likes of which the galaxy has never seen....

For more than 200 years, the armies of the Emperor of Mankind fought to reconquer the galaxy - led by the superhuman primarchs, the Space Marine Legions brought countless worlds back under the rule of ancient Terra. Now Horus, once honoured Warmaster and favoured son of the Emperor, has been corrupted by the whispered promises of Chaos. At his command the Imperium is torn apart by a terrible and bloody civil war, the likes of which the galaxy has never seen....

In spite of the corruption of Corax's plans to rebuild his Legion after the Dropsite Massacre, the surviving Raven Guard remain defiant. Happening upon a stricken Word Bearers vessel far behind the front lines, they find evidence of a new alliance between the traitors and the forge world of Constanix II. With rumours of terrifying new war machines stalking battlefields across the sector, it is a threat too great to ignore.