House Draconis - Betrayal: With the newly elected high king at their head, House Draconis prospered. It entered profitable alliances with both Houses Minotos and Pegasson while Tolwyn and Gerraint's friendship and that of their sons ensured House Draconis and House Chimaeros grew even closer.Blinded by their new status, the leaders of House Draconis did not see the darkness that had begun to fester in Gerraint's heart and the political machinations he and his consort conducted over the following years.Eventually, after both Danial Tan Draconis and Luk Tan Chimaeros passed their Ritual of Becoming, the Imperium called yet again upon the strength of the Knight houses of Adrastapol to lead the reconquest of the strategically important Industrial World of Donatos Primus.This vital Industrial World's output was easily the equal of that of a Forge World of the Adeptus Mechanicus but it had fallen to corruption when a large portion of its working classes and Planetary Defence Forces were swayed by the dark promises of Chaos and rose up against the Imperium. With the death of the local planetary governor, the world soon descended into global civil war.The Chaos Cultists benefitted from the help of the most fearsome and ruthless of the warriors of Chaos, the darkly famed Chaos Space Marines of the Word Bearers Traitor Legion, and their leader the baleful Dark Apostle Varakh'Lorr, who hoped to use the bloodshed on Donatos Primus to fuel a grand ritual that would see him ascend to the rank of Daemon Prince of Chaos Undivided.Yet isolated pockets of resistance were able to send a distress signal which spurred the Imperium into action. A counter-invasion was quickly mounted and Segmentum authorities petitioned High King Tolwyn to take command of the Imperial fleet gathered for the task ahead.The army High King Tolwyn commanded was truly vast. Beside the substantial force of Imperial Knights -- which numbered several hundred active Knights Paladins, Knights Errants and Knights Gallants, the army also comprised several regiments of the Astra Militarum. The largest portion of these supporting regiments were drawn from the Mubraxis Dustdogs, hardened soldiers similar to the famed Tallarn Desert Raiders, as well as a trio of regiments of the Tanhollis Highlanders and the Cadian Shock Troops.The 454th Cadian in particular would closely cooperate with House Draconis for the entire duration of what would soon be called the Donatosian War. To support these ground-forces, the Imperial Navy's Aeronautica Imperialis also allotted several wings of Thunderbolt fighters and Marauder Bombers while simultaneously protecting the planet's orbital space.The initial assault went well, the Imperial troops choosing to land on the Pentakhost Peninsula, an easily defendable spit of land that would function as Tolwyn's bridgehead on Donatos Primus. Encountering only lightly armed Chaos Cultists and their supporting vehicles, the Imperial counterinvasion made good progress, even linking up with the remaining Loyalist forces on the ground.On land, the war on Donatos Primus would be decided by whomever would be able to control the Adamant Citadels, a series of near-impregnable fortresses specifically designed to control the surrounding region. These Citadels depended on the energy produced within Donatos' industrial heartland, the Valle Electrum. The sooner the Imperial forces took the Valle Electrum and knocked out the Adamant Citadels, the sooner Donatos Primus could be freed from the yoke of its Chaotic oppressors.However, during Tolwyn's march on the Valle Electrum, the unimaginable occurred: in the middle of the battle, the Knights of House Chimaeros and House Wyvorn slowed their advance and turned their guns upon their fellow Adrastapolian Knights. At the same time, the Word Bearers, obviously in league with these Renegade Knights, locked down the most obvious escape routes, hoping to trap and annihilate the main Imperial army.Reacting quickly, the high king identified a possible escape route and organised a fighting retreat, smashing through the Word Bearers that were trying to block the Loyalists' path. With his Knight's motive actuators nonfunctional, Tolwyn personally led the rearguard that held back the enemy long enough for the survivors of Houses Draconis, Minotos, Pegasson and their allies to cross the bridge and reach safety.To prevent all attempts at pursuit, Tolwyn ordered his Sacristans to place Demolition Charges on the bridge, determined to preserve his House's legacy and the life of his children over his own. Unfortunately, the high king met his end in the Valle Electrum.