Death Guard - Time of Infection, M41: Siege of Vraks (813-830.M41) - The Siege of Vraks was an Imperial military campaign fought over the course of 17 standard years to retake the Imperial Armoury World of Vraks Prime from the heretical Forces of Chaos led by the Apostate Cardinal Xaphan. These forces included several vectoriums of the Death Guard Traitor Legion such as the Apostles of Contagion, Lords of Decay, The Purge, and The Tainted. Descending into the midst of the hideous trench war, the Death Guard unleash virulent bioweapons upon the Imperial forces and begin a chain of events that result in a full-blown daemonic invasion. At the conclusion of this painfully long and regrettable campaign of attrition, 14 million Imperial Guardsmen had been lost and Vraks Prime's entire original population of 8 million souls had been consumed in the violence or exterminated after they fell to Chaos corruption. The world was then declared Perdita (a Dead World) by the Imperium and placed under an interdiction to cordon it off from the rest of human space as ordered by the Ordo Malleus' Inquisitor Lord Hector Rex.The Battle of Konorvin (901.M41) - The Grey Knights meet the Death Guard on the planet of Kornovin, the battle representing the culmination of an ancient plan to banish Mortarion forever. The Daemon Primarch's might is too great, however; after Mortarion fells Supreme Grand Master Geronitan in battle, the newly appointed Supreme Grand Master Kaldor Draigo is forced to work a desperate banishment ritual that hurls Mortarion's spirit into the Warp for many standard years. It is a pyrrhic victory at best, a respite that Mortarion uses to gather fresh forces and plot his next and greatest invasion of realspace.Hive of Horrors (Unknown Date.M41) - Typhus infests Hive Pandorial with the Zombie Plague, departing before Imperial retribution can occur. Instead of encountering a hated and ancient enemy, the courageous men of the Astra Militarum's Necromundan Spyders find themselves plunging deep into the shadowed horrors of a hive city filled only with the shambling corpses of those they came to avenge.Curdled Faith (Unknown Date.M41) - Attacked by T'au pacification cadres, the Imperial Shrine World of Calendhula remains defiant behind their shield of faith. Their defence falters, however, when the world's statues weep tears of filth and their water sources turn to gelid slime. As battle rages and the body count spirals, hellish portals yawn in Calendhula's depths, and the warriors of the 4th Plague Company march out. Led by the daemon known as the Eater of Lives and bolstered by capering daemons, they crush both the Imperial and T'au forces to claim the world for Nurgle.Battle of Anvarheim (Unknown Date.M41) - Imperial Navy ships of Battlefleet Obscurus pursue an outnumbered Plague Fleet through the Kuidus Belt. After a savage battle, the last surviving plague ship manages to perform a full combat drop onto the world of Anvarheim before breaking up in the planet's atmosphere. Emerging from their drop-craft, the vectorium known as the Putrid Choir tear their way into Anvarheim's polar fortress city -- Jotungaard -- and seize the complex for themselves. Expecting swift victory, wave after wave of Imperial forces descend upon the complex. Each is broken in turn upon the tenacious Death Guard defences. A prolonged siege develops amidst bitter snowstorms tainted by Nurglite plague spores, and as the fighting stretches into solar weeks, then months, the Putrid Choir's entropic dirge echoes endlessly across Jotungaard from the fortress' Vox emitters. At last, three standard years after the Putrid Choir first descended upon Anvarheim, the remaining Imperial forces -- starved, diseased and deranged -- flee for the stars, leaving the Death Guard warriors sorely depleted but victorious within their contaminated fastness.Pandorax Campaign (959-961.M41) - In the Demeter Sector, Abaddon the Despoiler led an alliance of Traitor Legions, including his own Black Legion and the Death Guard, in an invasion of the Imperial world of Pythos, the location of an ancient hidden gateway to the Warp. Another piece in his dark design to bring an end to the Long War, the Warmaster of Chaos fell upon the world with a small force of Daemon Engines and infernal war machines. In the space of a few bloody solar days the major hive cities were overrun and the local Planetary Defence Forces crushed beneath the might of the combined Traitor Legions. Only a small contingent of Catachan Jungle Fighters, the CLXXXIIIth Catachan Regiment of the Imperial Guard, managed to escape the destruction, trekking through the world's inhospitable jungle to the relative safety of the nearest mountain range. Abaddon commenced the complex rituals and sacrifices that would open the Damnation Cache, a portal between realspace and the Warp, breaking open seals that had remained untouched since the time of the Horus Heresy. Heeding the impassioned cries for salvation from Pythos, the entire Dark Angels Chapter, led by Azrael himself, came to the defenders' aid. Supporting these Space Marines were Grey Knights dispatched from Titan to deal with the escalating daemonic incursion and the dire peril that the Damnation Cache posed. Both Imperial forces smashed through the Traitor Legion blockade around Pythos, in an epic void battle that pitted the finest warships of the Imperium supported by The Rock, the Dark Angels' mobile fortress-monastery, against the ancient vessels of the Traitor Legions. After the Chaos warfleet was finally driven from orbit and back into the void, the Space Marines were able to send their troops down through the atmosphere, bringing war to its ruined hives and hostile jungles. Failing to allow this distraction to draw him away from the awakening of the Damnation Cache, Abaddon sent an alliance of Legions to hold the Loyalists at bay. Before either the Dark Angels or the Grey Knights could stop him, Abaddon finally opened the portal to the Warp, daemons spilling out across Pythos. The ensuing conflict devastated the world as reality itself bent and buckled under the raw power of the Empyrean. The unleashed energies created rampant psychic phenomena, and Space Marines fought under boiling skies of blood and in rolling clouds of keening spirits. All across the Demeter Sector, latent psykers were awakened to full and terrible awareness and rebellions sprung up like cancerous boils on dozens of Imperial worlds in the region. After a long and bitter struggle, a squad of Grey Knights managed to reach the Damnation Cache and to close the Warp portal. Starved of their daemonic allies, the Traitor Legions were forced onto the defensive and finally into retreat. Abaddon's forces left Pythos, escaping the vengeance of the Imperium once again, but the world had been irrevocably tainted by the touch of the Warp, its once proud cities and vast wilds twisted into a nightmarish hellscape. Before the portal was closed, however, Abaddon took with him a psyker, rumoured to be of prodigious strength and the bearer of a unique gift that would aid the Warmaster of Chaos in his forthcoming 13th Black Crusade. This conflict as a result is remembered in Imperial records as the Pandorax Campaign.Paradaxian War (Unknown Date.M41) - A hauling barge delivering heavy ores to the Forge World of Paradax opens its ramp only to disgorge Plague Marines and Foetid Bloat-drones led by elements of the Weeping Legion. Bolters roaring, the Heretic Astartes smear diseased gore onto the machineries around them, spreading sanguous flux and corrupting the Forge World's Machine Spirits. Leading a growing army of proto-Daemon Engines and possessed Servitors, the Weeping Legion begins the grinding horror known as the Paradaxian War.Plague and Shadow in Commorragh (Unknown Date.M41) - A plague of flies erupts within the war-torn Sec Maegra district of Commorragh. From amidst the fly clouds stride Plague Marines of the Mouldering Claw, who meet the Drukhari in savage battle before vanishing as mysteriously as they arrived. Several metaphysical plagues emerge in their wake to trouble the Dark City.Stay of Execution (Unknown Date.M41) - On the killing fields of Vindor, the Death Guard decide to allow the last survivors of the Imperial Vindorian garrisons to flee, thus spreading Nurgle's gifts of plague and despair. Unwilling to watch perfectly good slaves escape, however, their Emperor's Children allies pounce, only for the Plague Marines to bar their path. A furious battle erupts between the followers of Nurgle and Slaanesh, while the diseased Vindorians scatter to the four winds, taking Nurgle's dubious blessings with them.13th Black Crusade (995.999.M41) - The Death Guard Traitor Legion deployed in its entirety to take part in Abaddon the Despoiler's 13th Black Crusade against the Imperial Fortress World of Cadia. This resulted in the largest mobilisation of both Imperial and Chaos forces seen in the Milky Way Galaxy since the Horus Heresy. The Forces of Chaos succeeded at last in overwhelming the defences of Cadia when Abaddon unleashes the shattered remains of a Blackstone Fortress known as the Will of Eternity as an artificial meteor to destroy the Cadian Pylons and devastate the Fortress World's valiant Imperial defenders.