- Beatification of Saint Drusus (502.M39) – After nearly a standard century of deliberation the Adeptus Ministorum‘s General Synod of Terra confers sainthood on Drusus, whose cult and dogma had already flourished within the Calixis Sector and become a dominating factor in the local Calixian sect of the Imperial Cult.
- War of Hubris (550-760.M39) – The independent world of Sinophia fights a covert trade war with the burgeoning commercial powers of the newborn Calixis Sector and is laid low. As a result, in the years that follow, much of its population is repatriated to the sector itself, its hive cities emptying and commerce fleeing. Sinophia now retains but a shadow of its former prominence and grandeur, nominally passing under the writ of the Lord Sector Calixis, and condemned to a long, slow economic starvation.
- Macharian Crusade (387-401.M40) – The Lord Solar Macharius launches a massive Imperial Crusade into the unexplored regions of the galaxy that marks the largest expansion of Imperial territory since the Great Crusade 9 millennia before.
- The White Sorrows (552-570.M40) – Drukhari corsairs of the Kabal of the White Sorrow plague the area of space known as the Periphery with a devastating series of raids. The corsairs are shattered and their threat ended at last when confronted and brought to battle by a force consisting of Battlefleet Calixis, Explorator and Rogue Trader forces (aided it is rumoured by unknown xenos forces) under the overall command of the Rogue Trader Kobras Aquairre. The battle turns when Aquairre’s flagship, The Son of Seth, successfully rams and boards the corsair flagship Altar of Torment, Kobras himself slaying the enemy’s Butcher Archon in single combat.
- War of Brass (738-741.M40) – The Hive Worlds of the Gelmiro Cluster fall into sedition against the Imperium, following the charismatic leadership of a figure calling himself the “Emperor of Brass,” debasing themselves into the worship of the Ruinous Powers. Heavily militarised, the Renegades quickly sponsor and arm rebel groups on nearby worlds and when counter-attacked, reveal the hand of dark forces from the Eye of Terror in their ranks. The so-called “War of Brass” that followed was comparably brief but bloody, involving forces drawn from across the sector, and the involvement of the Adeptus Astartes and the Titans of the Legio Venator, it rendered the once thriving worlds of Gelmiro blasted, rubble-strewn rocks. Classified as War Worlds and the haunt of murderous scav-mutants, Renegades and wreckers ever since, the Gelmiro System is still a shunned no-man’s land to this day.
- The Second Vortigern Crusade (740-745.M40)
- Meritech Wars (211-226.M41) – The clans of the Merates Cluster located between the Calixis and Ixaniad Sectors secede from the Imperium, rallying many Renegade factions to their cause, raiding deep into the sector and causing widespread disruption and anarchy. The Meritech Wars, at their height, pose the greatest threat to the sector’s stability in generations and even threatens to provoke internecine conflict with the bordering Ixaniad Sector. Thanks to the rise in power of Myram Harvala as Sector Governor, the Meritech Clans are crushed and the worlds of the cluster are scoured clean of life. In the aftermath, the Heretek conspiracy of the Logicians is proved to have been behind the outbreak of the war.
- First Siege of Vaxanide (410-412.M41) – The Vaxanide System is besieged by an Ork raider fleet, and the Ork forces also make planetfall to assault Vaxanide’s hive cities but the Greenskins are swiftly repulsed. The Orks are eventually driven off by the ships of Battlefleet Calixis, one sizable splinter force landing on the world of Ganf Magna.
- Fall of the Tellurian Combine (428-430.M41) – The dominating commercial power of the Tellurian Combine is uncovered as a front for the malefic Chaos Cult called the Brotherhood of the Horned Darkness. Such is the group’s widespread power and infiltration, even of the Lucid Court, that rather than risk civil war and an open purge, the Inquisition’s local Ordos Calixis declares a shadow war against the Brotherhood, which lasts for three standard years and involves what is believed to be the largest employment of both the Officio Assassinorum and the Grey Knights in the sector’s history before its conclusion. An unforeseen side affect of the widespread secret purges and fearful suspicion they create is a dramatic and long-term weakening of the sector’s central government which has detrimental effects for centuries to come.
- Reign of Terror on Malfi (428-479.M41) – The ascension of the House of Koba on Malfi results in the most tyrannical and brutal regime in the history of the Calixis Sector, and raises the spectre of succession and sector civil war, threatening the wresting, by covert and bloody means, of the seat of sector government from the then weak Lucid Court on Scintilla. The House of Koba falls at last by its own hand from betrayal within, leaving a power vacuum that leads to a twenty year period of strife, misrule and petty house wars on Malfi, ended only by a greater threat that rises from the tumult.
- Bloody Solstice on Malfi (499.M41) – The rise of the appallingly powerful Khornate Chaos Cult called the Pilgrims of Hayte forces an end to Malfi’s internal political divisions at the cost of the near fall of that mighty world to annihilation. The Pilgrims of Hayte, while defeated, are not destroyed and live on to become a thorn in the side of the Calixis Sector’s Imperial authorities until the present day and the source of a great many woeful atrocities.
- Devayne Incorporation (560.M41) – The writ of holy orders is removed from the Devayne Fraternity by the Synod Calixis of the Ecclesiarchy, which cites the group’s worldly aspect and growing moral turpitude, forcing its slow rebirth into the entity known as the Devayne Incorporation, one of the most powerful and rigorously organised commercial powers in the sector.
- Recovery of the Lucid Court (609.M41) – Lord Sector Calixis Larhanus Sult, called by many “The Great Conciliator,” is inaugurated and restores much power and prestige to the Lucid Court on Scintilla. He successfully pulls back executive authority to the office of the Lord Sector that had been slowly devolving to the Great Houses over the years, and massively expands the directly controlled military forces of his office and institutes aggressive reforms to the governance of Hive Sibellus.
- Haarlock Vanishes (703.M41) – Erasmus Haarlock, Rogue Trader, thought to be the last of his famed line, vanishes after completing the extermination of his bloody kin and leaving himself the sole-survivor of his clan.
- Sutters Rock Outbreak (724.M41) – The mining asteroid colony of Sutters Rock becomes the first confirmed location where what will come to be called the Fydae Strain Virus is encountered. The plague runs rampant and the dead walk, leading to the loss of all 120,000 colonists in a matter of solar hours. The virus is an unnatural Warp-contagion linked to the foul Nurglite Daemon-cult known as the Vile Savants.
- Ascension of Marius Hax (731.M41) – The iron-handed Marius Hax becomes Lord Sector Calixis, after effectively ruling as the power behind the throne for several prior solar decades for his ailing and aged kinsman, Larhanus Sult. Subtle, clever and above all ruthless, and able to build on the achievements of his predecessor, Hax is arguably the strongest ruler the sector has seen for several centuries.
- The Manchenko Purge (740.M41) – A sizable portion of the Commercia Great House of the Manchenko Dynasty is found to be corrupt and sanctioned by Inquisitorial purge, leaving it a battered shadow of its former power, further assailed and tormented by its rival houses. The Manchenko endure however and spend the next decades slowly rebuilding their power.
- Malygrisian Tech-Heresy (742-770.M41) – The militant Explorator Archmagos, Umbra Malygris, goes Renegade after clashing with the High Fabricator of the Lathe Worlds, taking with him hundreds of adepts and followers and threatening a full dogmatic schism within the Machine Cult’s ranks within the sector. Hunted on all sides, Malygris becomes increasingly insane but refuses to flee the sector, hiding instead in its shadows and cultivating a conspiracy of sympathisers and traitors to aid him. The renegade unleashes blasphemous horrors and forbidden weapons seemingly at random in order to further his research or avenge himself on his enemies. His forces also plunder and attack Mechanicus facilities, exploratory bases and even rival tech-heretic forces in order to obtain their secrets. Eventually destroyed at the hands of the Mechanicus Dragon Secutarii. However, Malygrisan lore still exists to plague the Omnissiah’s cult to the present.
- Treachery of Nephthys (777.M41) – Inquisitor Erya Nephthys, once the most promising of her generation, goes Renegade and massacres a number of her peers in the very heart of the Tricorn Palace on Scintilla. The vilest of Traitors, she attacks numerous other Imperial holdings and carves a bloody path cross the sector, prompting a blood hunt by the entire Ordos Calixis of the Inquisition. She dies a third and final time at the hands of Witch Hunter Rykehuss and her ashes are interred in a sealed vault to insure her disposal is a permanent one.
- Margin Crusade is Launched (784.M41) – Under the holy writ of the Synod Obscurus of the Ecclesiarchy and taking place far to the Calixis Sector’s spinward border, an Imperial Crusade is launched into the Margin region beyond the light of the Astronomican to the galactic north. The Calixis Sector is called on to provide troops and materiel to the ongoing Imperial effort and grudgingly complies. Thirty standard years later the Margin Crusade is believed by most in the Imperium to still be grinding on with a great loss of blood and treasure.
- Astral Knives Cult declared Heretical (792.M41) – Long tolerated, the centuries old void born death cult of the Astral Knife is found to have become tainted by association with dark forces and declared heretical by the Holy Ordos.
- Doom of the Ardent Seeker (799.M41) – The Ecclesiarchy Mission Ship, Ardent Seeker, is ravaged by a false prophet of the Pilgrims of Hayte on the way to the Shrine World of Maccabeus Quintus. Seven thousand worthy souls die in ways more hellish than the sane can imagine.
- Tranch Insurrection (807.M41) – A mutant uprising in the soot warrens of the minor industrialised Hive World of Tranch rapidly develops into a planet-wide insurrection which topples the ruling class, the brutal Oligarchs of Tranch. The mutants have formed together into a unified faction calling itself the Pale Throng, led by a cabal of terrifyingly powerful witches and mutant–psykers known as the Shroud Council. As rumours of the successful rebellion spread, so do brushfire revolts and uprisings on other worlds in the sector, and the flames of malcontent are fanned. Lord Sector Hax realises the wider threat to Imperial order and declares a mass counter-invasion of the war-torn world to bring the rebellion to heel, calling on the Inquisition to dispose of the Shroud Council, which they do, whilst the Ordo Hereticus launches Operation Bellerophon to decapitate the mutant forces. At huge cost in lives and at the price of laying waste to much of Tranch, the Pale Throng is crushed, but its many factions manage to scatter off-world, while sympathisers still raise revolt against the Imperium in the Pale Throng’s name elsewhere. Although the war is officially over, the pacification of Tranch goes on, providing a bloody baptism of fire for many of the sector’s soldiers.
- “Dance of the Dead” on Kalf (808.M41) – Mysterious cult activity on the world of Kalf forces a notorious clash between rival Inquisitorial factions, leading to bloodshed and acrimony within the ranks of the Ordo Calixis in its wake.
- The Vervilix Disaster (810.M41) – After suffering serious malfunction in transit, the Imperial Guard’s mass-troop conveyer Vervilix, far off course, makes a forced landing on the forbidden Ice World of Mara. Heavy casualties ensue and the remaining survivors are taken into Inquisitorial custody.
- Reef Stars Crusade Begins (811.M41)
- Red Vaults of Luggnam (811.M41) – A small Adeptus Arbites taskforce, investigating evidence of political corruption, murder and tithe-theft on the Mining World of Luggnam, instead encounters the horrors perpetrated by the wanted Arch-heretic Myrchella Sinderfell. In the aftermath, the Inquisition steps in and instigates a two-standard-year-long planet-wide witch-hunt to weed out recidivist elements.
- Disappearance of Inquisitor Layran (812.M41) – The Inquisitor Layran and his retinue of Acolytes vanish en masse while investigating rumour of a xenos conspiracy, peripherally connected to the so-called “Beast House” organisation on Fenksworld. Their loss prompts the Ordo Xenos to place the entire, widespread trans-sector group under scrutiny, leading to an ongoing covert investigation of the Beast House and its mysterious master, Solkarn Senk.
- Opening of the Spinward Front (814.M41) – WAAAGH! Grimtoof, the Ork WAAAGH! under the control of the Ork Warlord Ghenghiz Grimtoof, slams into the Periphery Sub-sector of the Calixis Sector in 814.M41. The massive Ork assault forced the Sub-sector Governor Duke Severus XIII to request aid from the Sector Governor Marius Hax, who mobilised the Calixis Sector’s military reserves to meet the Greenskin invasion. Even as the forces of the Imperial Guard poured into what the Departmento Munitorum soon designated as the Spinward Front under the command of Lord General Ghanzorik of the Maccabian Janissaries, Severus XIII used the chaos caused by the invasion to secede from the Imperium, creating the independent pocket empire in the Periphery known as the Severan Dominate. At present, a three-way war is underway in the Spinward Front between the forces of the Imperium, the Severan Dominate and the Ork WAAAGH!
- The Time of Von Ulm (820.M41) – This year marked the start of a particularly momentous era in the Calixis Sector’s history and Koronus Expanse which could decide the ultimate fate of the sectors at the hands of Heir Apparent lord-Captain Von Ulm and his crew.