[h1]Timeline of The Grim Crusade[/h1]
[list][*]798.M30 - The Grim Crusade begins.
[*]819.M30 - 
[*]822.M30 - Elimination of House Cruciatu, rulers of the Kirk System, and the Dark Eldar allied with them. Subsequent rediscovery of Micholi Vakrain on The Reserve, a.k.a Kirk’s Curiosity, in the Kirk System.
[*]826.M30 - After four years of trialing and discussion between Micholi and the Emperor, the Edict of Tolerance is codified in its final form, and officially decreed by the Emperor, allowing xeno races to be inducted into the Imperium as potential subjects of its rule provided they remain second to humanity on all fronts.
[*]832.M30 - Rediscovery of Prometheus the Light-Bringer on the Hive World of Amn.
[*]838.M30 - Rediscovery of Eiohsa izva Bronakavh on the Hive World of Kayaamat. Subsequent incorporation of the Saravata System into the Imperium, an expanse of 777 worlds.
[*]844.M30 - Rediscovery of Sarghaul Tartareus on the Ocean World of Carcinus.
[*]ca. 844-855.M30 - Rediscovery of Kaelianos on the Industrial World of Rasena. Subsequent incorporation of Latruria into the Imperium, an expanse of 300 worlds.
[*]857.M30 - Rediscovery of Augor Astren on the Mechanicus-held Forge World of Last Light in the Duodeculi System.
[*]858.M30 - Rediscovery of Gabriel Argenti on the Feudal World of Chalice. Subsequent purge of religious cults on Chalice.
[*]ca. 860s.M30 - Rediscovery of Usriel Andredth on the Mechanicus-held Forge World of Vion 5.
[*]ca. Late 860s.M30 - Beginning of the Rangdan Xenocides, as the Rangdan Cerabvores and Osseovores, as well as the Slaugth Murder-Minds, attack the Imperium from the galactic East and North. The Rangdan Xenocides will continue throughout the next six decades.
[*]5.159-5.202.873.M30 - The Battle of Atis, colloquially known as the Butcher of Steel, an ambush upon the Steel Sentinels and Usriel Andredth by the Dark Eldar, resulting in substantial Astartes casualties. Ultimately ended with planetary bombardment and the destruction of Atis' atmosphere.
[*]5.752.911.M30 - The Castigation of Pyotrskov, a successful disciplinary action performed by the Abyssal Lurkers, opposed by a garrison of Daughters of Iron.
[*]922.M30 - Rediscovery of Narcarro Salazar on the Civilised World of Merendosa.
[*]ca. 930s.M30 - The Third Rangdan Xenocide concludes with hard-fought victory for the Imperium of Man. A series of bio-pogroms are performed over the next decade to ensure the Rangdan Cerabvores and Osseovores are completely wiped from the galaxy.
[*]981.M30 - Rediscovery of Nelchitl Cuamani on the Feral World of Ixhun.
[*]000.M31 - The Ullanor Crusade is launched against the planets of the Ork-held Ullanor System, ultimately concluding with Warboss Urlakk Urg’s defeat on Ullanor Prime.
[*]001.M31 - The Triumph of Ullanor takes place, to celebrate the greatest achievement of the Grim Crusade to date. A Warmaster is also selected from the Primarchs present, to take the place of the Emperor in leading the Grim Crusade whilst he retires to Terra to work on new projects.
[*]001.M31 - The Council of Nikaea takes place, to discuss matters such as the Edict of Tolerance prior to the Emperor's official retirement from the Grim Crusade.[/list]