Halcyon Age Chronology

Presented below is the Halcyon Age Chronology, an exhaustive listing of all known campaigns and battles that occurred during the eleven year long period of relative stability in the early 31st Millennium during the first years of the regency of Alexandros Darshan VonSalim. By no means is this list complete, as much of the information presented in various canon sources is often ambiguous and even at times contradictory.

Therefore, this is merely a rough guide to the chronological order of the events during this conflict and no date should be taken as absolutely final should new evidence come to light.

Chronology

 * 000.M31 The Vanishing - On the way to Ullanor to begin the Ullanor Crusade, the 1st Expeditionary Fleet is lost within the Warp. The Emperor, Constantin Valdor and many Custodes disappear.
 * 001.M31 Conclave of Terra - After a whole year of the Imperium being in turmoil, the Imperium had managed to stabilise itself enough that a grand meeting could be held to decide on many of the key issues that had arisen in that year. Organised by Malcador the Sigillite, all of the Primarchs, members of the War Council and high ranking military and naval commanders from across the Imperium. Whilst meant to shore up the Imperium, the Conclave saw the opening of many cracks between Primarchs that would grow to sunder the Imperium.
 * Establishment of the Reclamation Command - As a result of the Conclave of Terra, a special command was created to search for the Emperor.
 * Notitium Sanction - An order issued by the Mechanicum in conjunction with the Reclamation Command.
 * The Appointment of the Governors - Following the decision that Astartes may hold administrative positions, Tenzin puts himself forward for the position of Governor of Segmentum Pacificus. To maintain balance, High Regent Alexandros appointed other governors. The Jade General was chosen for Governor of Segmentum Obscurus and XXX was chosen for Governor of Segmentum Ultima. All Primarchs from Segmentum Tempestus either refuse the office or are viewed as unsuitable by the Council of Terra.
 * 001.M31 Creation of the Ullanor Quarantine - The Ork Empire of Ullanor, the Emperor's next target, is deemed too much of a drain on resources to launch a Crusade against, and so a quarantine is established. The Obsidian Guard and Fire Keepers, supported by elements of the Halcyon Wardens and Godslayers Legions, build defensive positions and repel Ork raids and many attempts to break out.
 * 001.M31 The Zulea Negotiations - A minor compliance by the Vasalius Terran Heredes and the Godslayers. Initial attempts at diplomacy seem promising, but are revealed to be a trap and Selene Purechild is trapped within the Governor's Palace. Koschei and the Godslayers come to her aid and the world is brought back into the Imperium.
 * 002.M31 Compliance of the Autonarchic Union - A joint campaign by the Shadow Warriors and Warriors of Peace Legions against a string of rebel worlds.
 * 002.M31 The Reya Rebellion - When Cumia was first brought into the Imperium, it was ruled over by the Reya Dynasty. Defeated, the son of the former Emperor was spared, but banished from the planetary capital. After the Emperor's disappearance, this disposed son has risen up, and reclaimed his throne, publicly broadcasting the execution of all Imperial Representatives, as well as anyone who helped overthrow the Dynasty. The Godslayers suffer heavy initial losses, but bring the world back into compliance.
 * 002.M31 Rebellion of Vothea II - A short but brutal compliance conducted by the Vasalius Terran Heredes and Godslayers.
 * 003.M31 The Voss Incident - The enmity between the Obsidian Guard and the Mechanicum festers until agents of the Forge World Voss Prime discover that Lukas has been performing research on captured Xenos weapons and researching new methods of countering them from scratch. Charges of Tech Heresy are levelled but nothing comes of the accusation, for now.
 * 003-4.M31 Maelynos Campaign - A joint campaign by the Halcyon Wardens, Godslayers, Iron Revenants and the 5th Chapter of the Red Eyes.
 * 004.M31 Rise of the Royal Syndicate - The Royal Syndicate of the underhive gangs of Sialea overthrow the Governor, push the PDF out of the hives, and conduct a guerrilla war against the Godslayers.
 * 004.M31 Compliance against The Kili-Den Alignment - A joint campaign by the Halcyon Wardens and The Riven Legions against the Kili-Den Alignment of a dozen rebellious star systems.
 * 005.M31 Compliance of 47-16 - A supposedly major breakthrough is made during the Reclamation Command is made by Theoderaf and the Red Eyes, when they discover the world of Ishkur where the Emperor appeared to an elder.
 * 005.M31 The Radiant Uprising - A compliance campaign by the Godslayers under Koschei on behalf of the Mechanicum.
 * 005.M31 Humbling of Alaric Prime - The Iron Revenants under their Primarch Araphel aid the Mechanicum in re-establishing control of the Knight World of Alaric Prime to aid additional supplies. House Dustjaw is utterly destroyed.
 * 005.M31 An'ferthe Crusade - A joint campaign by the Obsidian Guard and Stalking Leopards against Exodite and Craftworld Eldar on the Maiden World of An'ferthe
 * 005.M31 Suppression of Gallius Vault
 * 005-006.M31 War for Ghaslakh - The Dune Serpents, beginning their operations in the Eastern Fringes, encounter the Ork Empire of the Ghaslakh Xenohold. In a two-year long conflict, the Orks threaten the east of the Imperium but are stopped by Azus Bahmut and the Imperial Army.
 * 005-006.M31 Defence against Waaagh! Munsmasha - A large Ork Waaagh! descends from beyond the northern frontier of the Imperium, heading towards Ullanor. A splinter of the Waaagh! attacked the Forge World of M'Khan. The Iron Revenants under Araphel rescue the forge world, gaining its loyalty.
 * 006-007.M31 Ullanor Crusade - With the Imperium stable and in a period of relative strength, Alexandros accedes to the requests of Lukas Keath and orders the Ullanor Empire to be scourged. Large numbers of Astartes from several legions are gathered, alongside many Primarchs, and the Orks are smashed.
 * 006.M31 Beginning of the writing of the Lectitio Divinitatus by Theoderaf
 * 007.M31 Persecution of Vaomir Reaches - The Iron Revenants and Araphel undertake in a brutal xenocide against Warp-tainted xenos.
 * 007.M31 Wedding of Koschei Kharkovic and Selene Purechild
 * 008.M31 The Separation of the Saturnine Raptors - Tensions within the Shadow Warriors reach a breaking point, and Mohammud al'Sayuf petitions the High Regent to allow him and the Saturnine Raptors to formally separate from the Shadow Warriors. Alexandros agrees to this after discussions with Rang Talyc, forming the first auxiliary legion.
 * 008.M31 Compliance of 670-25 - The Dune Serpents responds to requests for aid from the Vasalius Terran Heredes to take part in the Imperial Compliance of the world of Nurth. Unfortunately, the planet is lost when a Chaos-tainted local military force, known as the Echvehnurth, activated a Warp-tainted artefact called a Black Cube as a last act of defiance. Once activated, Nurth was transformed into a world inimical to all sentient life nearly overnight, killing most of the Imperial forces on the ground.
 * 008.M31 Extermination of the Aralus Migration - Iron Revenants and Knight Household House Hawkshroud exterminate a small Hrud migration raiding along the borders of Segmentum Ultima.
 * 009.M31 Ferrumgard Crusade - The Obsidian Guard and Black Stars conduct a joint compliance against [REDACTED].
 * 009-011.M31 Waaagh! Skrak - A cunning Ork Freeboota, Capt'n Skrak, led a growing Ork Waaagh! in Segmentum Obscurus.

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