| Year
|
Event
|
| 000.M31
|
The Thousand Sons, Space Wolves, and Word Bearers bring the Ark Reach Cluster to compliance. Major General Hestor Navarre is appointed Imperial governor.[1a]
|
| Perturabo leads the Iron Warriors to Olympia in response to civil unrest. The Legion kills over five million people and enslaves millions more to pacify the planet.[2a]
[Conflicting sources]The Horus Heresy Book Two states that this takes place in 004.M31.[3a][4]
|
| The Ullanor Crusade comes to an end. The Emperor of Mankind and His armies destroy Ork warboss Urlakk Urg and the largest Ork Empire in the galaxy. At the triumph celebrating the victory, the Emperor names Horus His Warmaster, renames the Luna Wolves the Sons of Horus, and retires to Terra.[1b][2b][3a][5]
|
| Cleansing of Laeran.[6a]
|
The 40th Expeditionary Fleet and the Space Wolves destroy the Olamic Quietude. [Help]
|
| The White Scars pursue fleeing Orks to the Chondax System.[3a][7]
|
| Battle of Akum-Sothos Cluster - The Warmaster Horus leads a force of Legiones Astartes to the Akum-Sothos Cluster to retake control of the worlds there from the Unsighted Kings. The Raven Guard take heavy casualties in the Battle of Gate Forty-Two and swear never to fight alongside Horus again.[8c]
|
| 001.M31
|
Council of Nikaea - An importance conclave is convened on Nikaea to determine the fate of Space Marine Librarians. The Emperor concludes that all Librarians must return to their Battle Companies and cease using their psychic powers. Magnus the Red is ordered to cease his study of sorcery.[1c][3a][9]
|
| John Grammaticus leads the Alpha Legion to 42 Hydra Tertius to meet with the Cabal. After the meeting, the Alpha Legion battle barges Alpha and Beta destroy the 670th Expeditionary Fleet.[10]
|
| Battle of Sixty-Three Nineteen - The 63rd Expeditionary Fleet fights the "Imperium of Man" on Sixty-Three Nineteen.[11a]
|
| Battle of the Whisperhead Mountains - on Sixty-Three Nineteen ends eighteen weeks after the local Emperor is slain. 63-19 is officially compliant.[12f]
|
| War on Murder - The Luna Wolves reinforce the Blood Angels and Emperor's Children on Murder. Upon the arrival of Sanguinius, the combined Imperial forces spend six months exterminating the megarachnids.[12a]
|
| Battle of the Corollis Star - The Emperor's Children and Iron Hands destroy the Diasporex.[6b]
|
| Compliance of Ibsen - The Death Guard, Salamanders, and Iron Hands bring 154-4 (Ibsen) to compliance. Eldar farseers try to warn Ferrus Manus of his impending doom, but he refuses to listen. Vulkan renames the planet Caldera.[13][14]
|
| Scouring of Hydras Reach - The Ultramarines scour the nine orbital plates of Hydras Reach.[15c]
|
| 002.M31
|
The Ashen Claws Chapter of the Raven Guard are sent on an expedition to the Ghoul Stars under the command of Praetor Calvus.[16k]
|
| The Interex makes contact with the Imperium in orbit of Murder. When the Hall of Devices in Xenobia Principis is burgled and destroyed, the Interex accuses the Imperial party of the crime.[11b]
|
| Warmaster Horus declines Alpharius' request to aid the 88th Expeditionary Fleet in a campaign against an Ork empire in the Kayvas Belt. Sanguinius and the Blood Angels join the fleet instead and the campaign takes thirteen months to complete.[3a][12c][17a]
|
| 003.M31
|
Upon returning to Imperial space, Warmaster Horus officially accepts the new name of his Legion: the "Sons of Horus".[3a][12d]
|
| Personnel from the 27th Expeditionary Fleet on Isstvan III send a distress signal while Vardus Praal and the Warsingers attack Imperial holdings.[3a][18a]
|
| 004.M31
|
Battle of Arkenath - Five hundred Ultramarines Battle-Brothers participate in the three-year fight against the Vektates xenos overmind to free the human population of Arkenath.[19a]
|
| Battle of Davin's Moon - The Sons of Horus come to Davin by Erebus' request. On Davin's moon, plague zombies attack the Imperial forces. Horus fights Eugen Temba and Temba wounds him with the anathame. Erebus convinces the Legion that the Serpent Lodge can heal Horus' wound.[3a][20b]
|
| The Fall of Horus - Erebus enters Horus' Warp vision disguised as Hastur Sejanus and tempts him with the powers of Chaos while Magnus the Red tries to dissuade him. Horus accepts the offer and awakens nine days after being interred in the Serpent Lodge's Delphos chamber. Magnus attempts to warn the Emperor of Horus' betrayal through forbidden sorcery, damaging the Golden Throne and psychic infrastructure on Terra in the process.[1d][12b]
[Conflicting sources] The Outcast Dead depicts Magnus' warning to the Emperor as occurring after the Drop Site Massacre.[21a]
|
| Battle of Tarsus - The Emperor's Children subsequently destroy Eldar Maiden Worlds in the Perdus Anomaly with virus bombs.[6c]
|
| The Emperor orders Leman Russ to bring Magnus the Red to Terra. Russ calls for his entire Legion to rendezvous at Telkara and then travel from there to Prospero.[22]
|
| Lammas Campaign - The 954th Expeditionary Fleet and Space Wolves 13th Great Company bring the Lammas Subsector to compliance, breaking the power of the Tyrants of Kernunnos. Wolf Lord Bulveye and his Wolf Guard spend three months battling the Dark Eldar Kabal of the Shrieking Heart on Antimon.[12x]
|
| Horus kills Fabricator Consul Emory Salignac of the Auretian Technocracy, triggering a ten-month war with the Technocracy.[6d][20a]
|
| Horus contacts Leman Russ and changes his directive from arrest to elimination of Magnus the Red. He then orders Sanguinius to take his entire Legion to the Signus Cluster in the Northern Cross to liberate it from the nephilim, Lion El'Jonson to take the Dark Angels to the Shield Worlds, and Roboute Guilliman to redeploy his fleet from Saturn to the Veridian System in preparation to engage an Ork incursion. Guilliman orders his fleets to rendezvous with the Word Bearers at Calth.[3a][12g][17b][23a][24a]
|
| Battle of Deep Orbital DS191 - Fulgrim orders a part of the Emperor's Children under Lord Commander Eidolon to rendezvous with the 63rd Expeditionary Fleet in the Isstvan system while he takes the rest to meet with Ferrus Manus in the Callinedes System and entice him to Horus' cause.[6d][18b]
|
| Battle of Prospero - The Space Wolves destroy the planet but Magnus escapes, taking the remaining Thousand Sons on Prospero to the Planet of the Sorcerers. Bjorn loses his hand to a daemon.[1e][3a][20c][25][26]
|
| The Space Wolves 13th Great Company disappears into the Eye of Terror in pursuit of the Thousand Sons.[27a]
|
| 005.M31
|
The disappearance of the Blood Angels (327.005.M31) - The Blood Angels disappear en-route to the Signus Cluster.[3a][17x][28c]
|
| Battle of Iota Horologi - The Death Guard purges the jorgall from the Iota Horologii system.[29b]
|
| Battle of Isstvan III - Horus uses the rebellion of Vardus Praal as a cover to purge the Legions under his command from all suspected loyalists. He deploys them on Isstvan III and then virus-bombs the planet from high orbit. Saul Tarvitz learns of the attack and warns the troops on the ground; Horus seizes the opportunity to blood his forces and directs a ground assault against the surviving loyalists. Nathaniel Garro kills Ignatius Grulgor to stop the cruiser Eisenstein from joining the attack and commandeers the ship to flee the system.[3a][18x]
[Conflicting sources] Fallen Angels puts Isstvan III in the 200th year of the Great Crusade (five years earlier)[23x][29a][30]
|
| Schism of Mars - The Dark Mechanicum unleashes scrapcode into the Martian information grid, crippling nearly every independent manufactory on the planet.[3a][31a]
|
| Battle of the Somnus Citadel - Nathaniel Garro asks Malcador for a purpose. Malcador makes him his first Knight-Errant and orders him to find other exceptional Astartes for his cause.[29c][32a]
|
| Captain Menes Kalliston and elements of the Thousand Sons 4th Fellowship return to Prospero to find answers. A detachment of World Eaters led by Khârn captures Captain Kalliston and kills the rest of his unit. Khârn interrogates and eventually kills him.[33]
|
| Defense of Prandium - A Hrud migration threats Prandium.[15d]
|
| 006.M31
|
Schism of Mars - Four Companies of Imperial Fists, led by Sigismund and Camba-Diaz, secure supplies of Astartes weapons and armour from the Mondus Gamma and Mondus Occulum manufactories. Fabricator-Locum Kane becomes Fabricator-General of the Adeptus Mechanicus.[31b][34]
|
| Warmaster Horus provides the Iron Warriors with psychically-acquired telemetry of the Imperial Fists Retribution Fleet in the Phall system and guarantees their safe transit to the system to destroy them.[34]
|
| The Word Bearers abandon a nearly-complete compliance action on 1301-20 (Calis) to respond to the Emperor's order to join the fleet approaching Isstvan V.[35a]
|
| Bequa Kynska's Maraviglia premieres in La Fenice onboard the Pride of the Emperor. Singer Coraline Aseneca and her chorus transform into daemonettes while the music pushes the mortal audience into an orgiastic frenzy.[6e]
|
| Vulkan names T'kell as Forgefather and instructs him to destroy all but seven weapons held in his vault on Nocturne.[36]
|
| Imperial Fists Captain Yonnad is selected to lead his Legion's Retribution Fleet, consisting of three hundred Companies of Astartes and five hundred and sixty one ships, when Sigismund defers to remain at his Primarch's side. The fleet flies straight into a Warp storm that obliterates many ships, leaving Alexis Polux in command of the surviving fleet as it comes to rest in the Phall system.(170.006.M31)[34]
|
| Ad Temperesta translates into realspace at the edge of the Isstvan system to covertly survey the planets. It transmits its findings back to the execution fleet. (528.006.M31)[3b]
|
| The loyalist execution fleet translates into realspace in the Isstvan system and makes full speed toward Isstvan V. (565.006.M31)[12j]
|
| The First Wave on Isstvan V (566.006.M31) - The first wave of loyalists make planetfall on Isstvan V. Contact is made with the traitors forty minutes later. After forty more minutes, the traitors begin their counter-attack. Ninety-six minutes after planetfall, traitor suicide attackers ambush the second landing wave. The fighting grinds to a stalemate two hours after planetfall and both sides withdraw after the third. Half an hour later, the second wave of Legion reinforcements begins planetfall.[12k]
|
| Drop Site Massacre (567.006.M31) - The four reinforcing Legions open fire on the first wave, trapping them in a pincer. Fulgrim kills Ferrus Manus, signalling Angron and Mortarion to lead their Legions to attack. Corvus Corax, wounded after battling Lorgar and Konrad Curze, leads the few surviving loyalists in a break out of the Urgall Depression. Vulkan is missing in action. About half of the Imperial military defects to Horus' side.[6f][12i][35b]
|
| The Siege of Cthonia begins with an Imperial Fists blockade[37]
|
| First Battle of Paramar (671.006.M31) - The Alpha Legion and Iron Warriors invade the Paramar system.[8a]
|
| Fulgrim defies Horus' order to travel to Mars in order to pillage a Mechanicum resource world. His subordinates determine that he is not himself and attempt to torture the daemon out of him.[38]
|
| Damnation of Pythos - A daemonic incursion on the death world Pythos destroys the survivors of the Iron Hands 111th Clan-Company.[39]
|
| Great Siege of Lesser Damantyne - Iron Warriors loyal to the Emperor defend the Schadenhold from their traitor brethren in a siege lasting a year and a day, Terran standard.[40]
|
| The wards that held the psychic wave caused by Magnus' intrusion into the Imperial Dungeon finally fail, releasing it to wash across the minds of Terra. Compounded with public knowledge of the events at Isstvan V, millions are driven insane or killed outright. The imprisoned Crusader Host breaks out of Khangba Marwu. Severian is the only Crusader not killed or recaptured; he is eventually tracked down and recruited by the Sigilite for his Knights-Errant.[21x][41]
|
| The Alpha Legion simultaneously attacks the Space Wolves in the Alaxxes System and the White Scars in the Chondax System. Faced with conflicting and contradictory information about the status of the Great Crusade, Jaghatai Khan refuses to aid Leman Russ or heed Rogal Dorn's summons to Terra, choosing to travel to Prospero to see for himself the truth of the civil war.[24b][42b][43a]
|
| Evacuation of Corvus Corax (835.006.M31) - Corvus Corax boards a shuttle to evacuate from Isstvan V after ninety-eight days of gruelling guerrilla warfare. Alpha Legion operatives infiltrate the Raven Guard while others prevent a World Eaters vessel from firing on the Raven Guard relief vessels.[42a][44][45]
|
| 007.M31
|
Arrival of Corvus Corax on Terra (200.007.M31) - Corvus Corax arrives in the Solar system intent on seeing the Emperor of Mankind. The Emperor speaks through Malcador to give Corax the location of technology that he can use to rebuild the Raven Guard.[42b]
|
| Battle of Dominica Minor (4.392.007.M31) - Half of the Death Guard fleet takes three hours to wipe out the defences of Dominica Minor. At nearly the same time, a single ship of the Sons of Horus convinces the people of Moab to turn on themselves to earn the mercy of the Warmaster.[46]
|
| The Battle of Phall between the Imperial Fists and Iron Warriors[37]
|
| Town 44 on Virger-Mos II agri-world succumbs to panic when it receives word of the Emperor's defeat.[47]
|
| Recovery of Cassian Dracos (ca. 570.007.M31) - The Ebon Drake returns to Isstvan V and recovers Cassian Dracos from the battlefield.[16l]
|
| A strike force of loyalist Astartes destroys the Word Bearers ship Furious Abyss before it can attack Macragge.[19x]
|
| Battle of Calth (ca. 679.007.M31) - The Word Bearers crash the fleet tender Campanile into the Ultramarines' fleet over Calth, starting the Battle of Calth. During the battle, Nathaniel Garro recruits Tylos Rubio on the order of the Sigilite.[32x][48x]
|
| Battle of Armatura (Shadow Crusade) - A combined Word Bearers and World Eaters fleet, including the Abyss's sister ships Blessed Lady and Trisagion, attacks Armatura. Elements of the Word Bearers Legion also attack other worlds in the Ultramar region. The Ruinstorm forms, cutting the galaxy in half and smothering worlds in darkness.[49a][50a]
|
| Roboute Guilliman calls for loyalist fleets to gather at Ultramar. The 468th Expeditionary Fleet is sent to secure or destroy a warp engine on Perditus Ultima.[51b]
|
| Recruitment of Macer Varren - Nathaniel Garro and Tylos Rubio recruit Macer Varren for the Sigilite after they neutralize a traitorous element of White Scars on the edge of the Solar system.[52]
|
| Recruitment of Garviel Loken - Nathaniel Garro, Tylos Rubio, and Macer Varren return to Isstvan III to recruit Cerberus.[53]
|
| Tenebrae Mission - Alpha Legion Squad Sigma redirects Tenebrae 5-90, an asteroid containing a Mechanicum/Alpha Legion research station and a Warp-manipulating xenos device, to fall into the star 66 Zeta-octis.[54]
|
| Second Battle of Prospero - While Jaghatai Khan and Mortarion battle in the ashes of Tizca, Hasik Noyan-Khan tries to take control of the White Scars fleet for Horus.[43b]
|
| Rogal Dorn interrogates remembrancer Solomon Voss, recovered from a traitor vessel on the edge of the Solar system.[55]
|
| In the wake of psychic warfare and warpcraft used against the Five Hundred Worlds, Roboute Guilliman reinstates the Librarius, defying the Edict of Nikaea for the duration of the emergency.[50a]
|
| Massacre of Oqueth Minor (721.007.M31) - Tybalt Marr leads the force that destroys the Iron Hands Legion Clan-Council at Oqueth Minor. Shadrak Meduson manages to escape the massacre.[12l]
|
| Veridian Mandeville relay station Tertius receives a message from Ultramarines Captain Alcheios requesting confirmation of mission parameters for the Ghaslakh Campaign.(7.854.007.M31)[56]
|
| Fulgrim and Perturabo enter the Eye of Terror in pursuit of an Eldar weapon. Fulgrim ascends to daemonhood.[57]
|
| 008.M31
|
Battle of Percepton Primus (004.008.M31) . Although the war for the system ends in twenty-seven minutes, after the Word Bearers cripple the Ultramarines space fleet, ground resistance continues for one hundred and sixty four days.[58]
|
| Ruin of Maerdan[59a]
|
| The Siege of Baal begins[37]
|
| Second Battle of Paramar.[8b]
|
| Lion El'Jonson and Konrad Curze battle on Tsagualsa during the Thramas Crusade.[60]
|
| Lion El'Jonson orders the 4th, 6th, 9th, 16th, 17th, and 30th Dark Angels Orders and the Invincible Reason to Perditus to prevent the Death Guard from pillaging the secret Adeptus Mechanicus installation there. En route, Invincible Reason attempts to trap the Night Lords vessel Avenging Shadow but is pulled halfway into the Warp. The Dark Angels and crew fight a daemonic incursion before the ship is freed.[51a][60]
|
| Battle of Perditus - The Dark Angels, Iron Hands, and Death Guard battle on Perditus Ultima for possession of a Warp engine.[12e]
|
| Mezoan Campaign[16e]
|
| Fall of Baztel III[16c]
|
| Battle of Bodt - Autek Mor of the Iron Hands leads an attack on Bodt, the principal fief world of the World Eaters. He uses his fleet's ordnance to knock Bodt's moon out of its stable orbit and crash it into the planet's surface, wiping out all life. Before the moon falls, Mor plunders a stasis casket from a vault deep below the surface of the planetary capital, Tredecimmia. The casket bears the sigils of Terran gene-wrights that helped the Emperor create the Primarchs.[16b]
|
| Burning of Ohmn-Mat - The forge world of Ohmn-Mat succumbs to civil war. The atmosphere is ignited, consuming the world in flame and triggering the detonation of the forges' atomantic reactors. The world is bathed in fire that will last for decades.[16a]
|
| Incident of Dagonet - The masters of Terra's assassin clades dispatch an execution force to Dagonet in order to assassinate Warmaster Horus. Their mission is unsuccessful.[16c][61]
|
| Isessos Genocide - Alpha Legion strikes in the Isessos system cause severe casualties. Those returned to the colonies for treatment are found to be infected with a harmless algal strain. The strain jumps from its human hosts to the agri-worlds' produce fields and wipes them out, leading to ninety billion deaths by famine and political destabilization of the system.[16c]
|
| Battle of Vannaheim - The Space Wolves lose their grand cruiser Helicon Spear to the Iron Warriors in a failed attempt to drive the traitors from the Vannaheim's orbital hives.[16x]
|
| Battle of Nuceria (Shadow Crusade) - Lorgar and Angron lead their Legions to Nuceria. Angron orders the planet exterminated, but Roboute Guilliman and his Ultramarines arrive to interfere and exact retribution for Calth. Fidelitas Lex is shot down. Lorgar's Shadow Crusade transforms Angron into a Daemon Prince.[49b]
|
| 009.M31
|
Barabas Dantioch begins his research and experimentation with the xenos technology in Mount Pharos on Sotha.[50b]
|
| Xana Incursion - A hand picked strike force of Legiones Astartes, including many Blackshields who have remained loyal to the Emperor, is sent to the forge world of Xana to destroy a delivery of Ordinatus war machines that would have sealed Xana's allegiance with Horus.[16c]
|
| Battle of Gaunt's Hollow[16f]
|
| The Breaking of Anvillus[37]
|
| The Siege of Inwit[37]
|
| Konrad Curze and the Atramentar board Invincible Reason while the bulk of the remaining Night Lords fleet flees into the Warp. The Atramentar, including Jago Sevatarion, are either killed or captured, while Curze eludes capture in the bowels of the ship.[62]
|
| Battle of Dwell - Horus Aximand kills Bion Henricos and loses his face in a sword fight with Hibou Khan. Horus grants permission to Tybalt Marr to take any action he deems appropriate to eradicate the Shattered Legions.[12x][63][64]
|
| Battle of Molech - Malcador dispatches a task force of Knights-Errant to assassinate Warmaster Horus at Molech. House Devine betrays the Imperium to side with the Warmaster. Horus gains the full empowerment of the Chaos gods.[16c][65]
|
| Battle of Arissak - Tybalt Marr destroys Shadrak Meduson's assembled Shattered Legion force.[16c]
|
| Sangraal Campaign.[16c]
|
| Barabas Dantioch activates the Pharos device on Sotha, creating an empathic warp beacon similar to the Astronomican pointing toward Macragge. Thousands of refugees and Legiones Astartes converge on Macragge. Vulkan teleports into orbit and crashes to the surface. Konrad Curze escapes the Invincible Reason and wreaks havoc on the planet before Damon Prytanis unleashes the captured daemon Ushpetkhar on him. Roboute Guilliman declares Sanguinius the regent of the Imperium Secundus.[16c][50x]
|
| Battle of Ghorna (676.009.M31)- Acting on the orders of Marcus Valerius, himself acting on a prophetic dream he believes came from the Emperor, the Therion Cohort arrives at the agri-world Ghorna to find the Death Guard in the midst of plundering it. The Cohort defeats the Death Guard and resupplies.[66a]
|
| ca. 009-010.M31
|
The Emperor personally intervenes to end the War Within the Webway. His leaving the Golden Throne requires the Unspoken Sanction be enacted; the Silent Sisterhood is ordered to collect psykers from Imperial worlds to be placed around the Throne and drained of their power to sustain its functions of maintaining the seal on the Webway gate.[67]
|
| 010.M31
|
Baal receives word from Raldoron in the Signus cluster that the Blood Angels Legion still exists, narrowly averting their dissolution by order of Malcador.[68]
|
| Sixty-six Salamanders Legionaries brave the Ruinstorm to escort Vulkan's body back to Nocturne.[69]
|
| Battle of Sotha - The Pharos device emits a massive psychic pulse that cripples the Night Lords invasion fleet and races outward from Sotha, eventually catching the attention of the Tyranid Hive Mind in intergalactic space.[70]
|
| The Raven Guard battlecruiser Sabalis Liberatus breaks into realspace near Galaspar. A traitor Imperial patrol fires on them, but the Raven Guard board and capture their vessels. Sabalis Liberatus begins a two-year trek toward Terra.[16d]
|
| Dispute of Iron - The forge worlds Incunabula, Urdesh, Valia-Maximal, and Kalibrax declare war on Graia, Arl'yeth, and Atar-Median. Civil war engulfs Arachnis and Jerulas Station.[16d]
|
| Battle of Tallarn (010-012.M31).[16d]
|
| While the resurrected Vulkan makes his way from Nocturne to Terra, Eldrad Ulthran and Barthusa Narek hunt agents of the Cabal.[71x]
|
| The Raid of Kamiti Sona[28b][72]
|
| 011.M31
|
The Lorin Alpha Campaign (011-013.M31)[37]
|
| Malagant Conflict (011-014.M31) - A company of Raven Guard stalls the Death Guard's campaign on Malagant with three years of guerrilla warfare. The Death Guard finally withdraws before Imperial Fists reinforcements enter the system.[16d]
|
| By this time, the Night Lords are no longer an organised fighting force, but a band of sadistic madmen who inflict violence and terror for its own sake.[16h]
|
| A Legiones Astartes warband calling itself the Ashen Claws ravages the Nostramo sector. Among its actions, the warband forces the Night Lords vessel Shroud of Eventide to crash on Kalleth.[16k]
|
| Battle of the Kalium Gate.[73a]
|
| Battle of Catallus.[12h]
|
| While Lion El'Jonson hunts Konrad Curze in Ultramar, Luther foments rebellion from the Imperium and the Lion on Caliban.[74]
|
| Alpha Legion sleeper cells are activated in the Solar system, causing widespread disruption and panic. A massed fleet of the Legion enters the system and is thrown back at the Battle of Pluto. All information concerning the Alpha Legion's presence in the Solar system, including the death of Alpharius in the battle, is classified on the order of Rogal Dorn.[75x]
|
| The White Scars fleet arrives in the Solar system.[73b][75a]
|
| Following proof that the Emperor lives, Imperium Secundus is abolished by Roboute Guilliman, Sanguinius, and Lion El'Jonson. The Blood Angels, Ultramarines, and Dark Angels leave Ultramar and attempt to reach Terra through the Ruinstorm. They instead reach Davin, the heart of the Ruinstorm, and destroy the corrupted world. While Sanguinius and most of the Blood Angels arrive at Terra, his brothers take their Legions to harry the traitors and slow their advance.[76]
|
| Battle of the Aragna Chain - Shadrak Meduson is captured and executed by Tybalt Marr.[71a]
|
| Vulkan reaches Terra through the Webway and guards the Golden Throne.[71b]
|
| Battle of Tralsak[59b]
|
| 012.M31
|
The Dissolution of the Order Elucidatum - Malcador formally dissolves the Order Elucidatum.[28a]
|
| Battle of Trisolian - Leman Russ and Horus Lupercal gravely wound each other.[77]
|
| Battle of Yarant - The Space Wolves suffer significant losses to the forces of the traitors before the Raven Guard arrive and evacuate the survivors.[66b]
|
| Formation of the Adeptus Mechanicus[Help]
|
| Balthor Sigma Intervention[59b]
|
| Scouring of the Ollanz Cluster[12x]
|
| 013.M31
|
Battle of Beta-Garmon, one of the largest single battles of the Heresy[Help]
|
| Battle of Honourum[Help]
|
| Horus falls into a coma following Beta-Garmon, but orders the mustering of the traitor Primarchs to Ullanor in preparation for the drive on Terra. Horus eventually recovers, Lorgar retrieves Fulgrim from the Eye of Terror while Perturabo retrieves Angron on Deluge. Lorgar is exiled after attempting to usurp the Warmaster.[78]
|
| En route to Terra, the Destroyer Plague hits the Death Guard. Mortarion swears allegiance to Nurgle to alleviate his Legion's suffering.[24c]
|
| 014.M31
|
Siege of Terra (Secundus 13) - Horus' army lays siege to the Emperor's Palace for fifty-five days. When he detects the fleets of the Dark Angels and Space Wolves approaching, Horus drops his ship's shields to entice the Emperor into a personal confrontation. The Emperor, Sanguinius, and Rogal Dorn teleport onboard Horus' battle barge Vengeful Spirit. Horus kills Sanguinius before the Emperor utterly obliterates Horus. Rogal Dorn carries the mortally wounded Emperor to the Golden Throne to keep Him alive.[79][80]
|
| Fall of Caliban - Luther betrays Lion El'Jonson upon the Lion's return to Caliban. In the ensuing fight, Caliban is split apart and El'Jonson vanishes while Luther is captured. He is kept in a stasis field inside The Rock, the largest remaining piece of Caliban and the new base of the Dark Angels.[2e][81]
|
| The Ultramarines chase the Alpha Legion to Eskrador. Roboute Guilliman leads a strike force of three thousand Ultramarines in a Codex-defying raid on Alpharius' command bunker. Guilliman kills Alpharius with one blow and has his body burned. The Alpha Legion and the natives of Eskrador continue to harass the Ultramarines until they regroup to orbit and bombard the surface.[2d]
|
| Roboute Guilliman compiles the Codex Astartes, which lays down the new organisational doctrine for Space Marine Chapters. [2c]
|
| ca. 014.M31
|
The Iron Cage - Rogal Dorn loses four hundred Imperial Fists in a failed siege of the Iron Warriors Eternal Fortress on Sebastus IV. While Dorn withdraws with the help of Roboute Guilliman and his Ultramarines, Perturabo sacrifices the gene-seed of the fallen to become a daemon prince.[2a][2f]
|
| 017.M31
|
Great Scouring - Loyalists gradually re-conquer the Imperium. Chaos forces retreat into the Eye of Terror.[16g][81][83]
|
| An Ultramarines task force captures the Word Bearers battleship Chronicle of Ashes in the Dominion of Storms. The upper decks of the Chronicle contain etchings of the Word Bearers' history, including information previously unavailable to Imperial scholars.[15a]
|
| 019.M31
|
Third Battle of Paramar.[8b]
|
| 020.M31
|
Rogue trader Erasmus Skathe travels to Cairn in the Nostramo sector for salvage. His expedition finds the world dead, inhabited by degenerate humans, and evidence that an unknown Legiones Astartes force annihilated the world's defences and trapped its inhabitants in the sub-levels of its hive cities.[16i]
|
| The Reclamation of the Shroud of Eventide - The Blood Angels reclaim the Night Lords vessel Shroud of Eventide from the surface of Kalleth, rechristen her Crimson Intent, and transfer her to the Angels Vermillion Chapter in preparation for the Second Founding.[16j]
|
| 021.M31
|
Second Founding - The nine loyal Space Marine Legions are divided into new Chapters during the Great Scouring. The Apocrypha of Skaros asserts that the Ultramarines Legion became twenty-three Chapters. No Chapters are recorded as descended from the Salamanders. The Grey Knights are secretly created and designated Chapter 666.[2k][2l][83][84]
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| 022.M31
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The Chronicle of Ashes is cleansed, tech-exorcised, and rededicated as the Lex Talonis. The Ultramarines present it to the Nemesis Chapter.[15a]
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| ca. 022.M31
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Disappearance of Corvus Corax - Corvus Corax leaves his self-imposed seclusion after a year and a day and takes a ship toward the Eye of Terror. His last known communication is simply "Nevermore."[2j]
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Alpha Legion warlord Dynat "Crowbane" Mal retreats to the Mandragoran Stars and gathers a thousand-strong force of traitors, diabolists, and renegades around him. He fends off all Imperial attacks against him and destroys the Imperial outpost at Amarah, effectively removing the Imperial presence from the region, which is now known as the Dark Marches.[85]
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| ca. 032.M31
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The Ultramarines destroy Colchis.[48a]
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| Konrad Curze is discovered and awakened by the crew of the salvage ship Sheldroon.[86a]
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| ca. 034.M31
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Rogal Dorn leads three Companies of Imperial Fists to join the fight against a Black Crusade. Dorn is killed aboard the Sword of Sacrilege but his remains are recovered before the ship can escape.[2f][87]
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| ca. 036.M31
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Konrad Curze reaches Tsagualsa, and is soon rejoined by the remainder of the Night Lords Legion.[86b]
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| ca. 081.M31
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Disappearance of Jaghatai Khan - Jaghatai Khan and the White Scars First Brotherhood disappear in pursuit of Dark Eldar on Corusil V, near the Maelstrom. Chapter lore states that the Khan pursued a Dark Eldar Archon through a Webway portal.[2i]
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Heretic Tomes
