Death Guard - Time of Remission, M32-M41: Galactic Respite (Unknown Date.M32-M41) - The Death Guard engage in a series of brutal wars against their erstwhile allies in the Eye of Terror. Though they prevail time and again, this territorial campaign consumes Mortarion's entire focus. Thousands of standard years will pass in realspace during which the Death Guard are rarely sighted by the servants of the Imperium.Bane of Change (Unknown Date) - During fighting against the Tzeentchian Chaos Cultists of the Lost Spiral on J'kadis, Death Guard Lord Glottox unleashes his feared Drone Hive. Seven thousand Foetid Bloat-drones thrum into battle, shrugging off the agile strikes of disc-riders and Burning Chariots as they close on their target. Ploughing through ferocious enemy fire, the drones shield the lumbering Dark Mechanicum plague bombers at their heart, which rain rot-diffusion warheads on the Tzeentchian Twystshrine and corrode it away to crystalline ruins.The Green Death (Unknown Date) - The infected Ork warbands invading the Ecclesiarchy Shrine World of Sanctia evince a terrible new barbarism. They fall upon the planet's defenders and consume them bodily, devouring the living and the dead alike, as if compelled by a daemonic hunger. Bloating and swelling, the Orks become obese monstrosities that can move only at a snail's pace. Puzzled by this strange reprieve, the Adepta Sororitas systematically purge the Orks with flame and Bolter. It is then that Mortarion and the Death Guard of the 7th Plague Company make planetfall. The Daemon Primarch looms over the bodies of the Orks as he stalks to the front lines. At his passing, each Greenskin bursts apart in a shower of foul fluids, and dozens of Nurglings spill out from their remains to follow their master. Sanctia falls to the Green Death within twenty solar hours of Mortarion's arrival, and the plague spreads across the Ecclesiarchy-held star system.The Smog of War (Unknown Date) - Vectoriums of the 2nd Plague Company, including the Rusted Claws and the Tainted Lung, engage the Iron Hands of Clan Kaargul and Astra Militarum armoured regiments on Tsarvia II. As the grinding tank war starts to turn against them, the Death Guard set light to the sprawling chem-works of Tsarvia Secundus. Malignant Plaguecasters channel the resultant fumes into banks of corrosive smog that wreathe the Death Guard tanks and dissolve the hulls of their Imperial foes. Able to withstand the hideous conditions in a way that their enemies cannot, the Death Guard soon crush Tsarvia II beneath their armoured treads.The Black Crusades (M31-M41) - Over long centuries, Abaddon the Despoiler spends the blood of countless followers in battles against the Imperium. Though seemingly unconnected, each so-called Black Crusade is in truth part of a far grander plan that eventually triggers the opening of the Great Rift in 999.M41. During this period, the new Warmaster of Chaos forges numerous pacts with the greatest Chaos powers, amongst them the Death Guard. Mortarion's scorn for Abaddon is obvious, but the Daemon Primarch cannot ignore his successes, and so sends warbands of his sons to aid in several of the Despoiler's campaigns. Typhus aids Abaddon more readily, fighting alongside him more than once, and using his attacks upon the Cadian Gate as an opportunity to spread the seeds of the Zombie Plague far and wide.Seed of Doom (Unknown Date.M41) - Confounded by the magnatropic defence matrices of the Forge World Takbandrha, an invasion force of the 5th Plague Company is all but annihilated. Only a single Death Guard Sorcerer makes it to the Forge World's surface, vanishing into the gloomy serf-warrens of the underfactorums. Summoning daemons through ritual sacrifice and desecration, the Sorcerer conjures a foul new army whose burgeoning corruption draws yet more of their number through the veil, their numbers growing exponentially. Though the initial Death Guard attack causes the merest pinprick in the hide of this Imperial world, the virulent doom that spreads from it soon sees Takbandrha sicken and die.Scouring of Makenna VII (Unknown Date.M41) - This was a mutual campaign to conquer the Imperial world of Makenna VII, which was fought by the Forces of Chaos under the supreme command of the Warmaster Davroth, a powerful Chaos Lord of the Word Bearers Traitor Legion. Lord Festardius, a powerful Chaos Lord of the Death Guard Legion, made an alliance with Davroth during the Horus Heresy. Although during the Long War against the Emperor both Chaos Lords have fought separately, Festardius sought to rekindle their ancient comradeship. He learned of Davroth's ultimate goal and offered his support, in return for the rulership of Makenna VII once Davroth moved on to his next conquest. Festardius' Death Guard warband veterans saw much fighting, proving invaluable to Davroth's plans. The planet was eventually overrun by the Forces of Chaos, and the Ruinous Powers laid claim to yet another Imperial world.Achilus Crusade (777.M41) - Blight Master Ussax, a powerful Veteran of the Death Guard Traitor Legion and a known member of the Daemon Primarch Mortarion's inner circle of Chaos Sorcerers, has continued to plague the Jericho Reach during the Imperium's ongoing Achilus Crusade. Travelling from one warzone to the next, from each battlefield, Ussax gathers up a grim and unspeakable harvest from the dead and dying. Concocting his latest ague from these deceased corpses, Ussax then releases it upon the next battlefield he attends, once more harvesting the bodies of the victims.