First Weeding Wars

The Fist Weeking Wars was an Imperial purgation campaign conducted by the Golden Knights Space Marine Chapter in order to free the Tirian Sub-Sector from the yoke of the nefarious Emperor's Children Traitor Legion and their Chaos Cultist allies.

Background
The reconstruction of the Golden Knights Space Marine resulted in the development of over 1,000 Adeptus Astartes, not including a full six hundred initiate astartes that the chapter had set out on their own training crusades. With the threat of excommunication hanging over their head, the chapter set out to face any major threat approaching the Imperium. In the later days of 894.M38, the chapter found their target, a rapidly building Campaign of Subversion within the Tirian sub-sector.

The chapter arrived on the world of Aboras, the capital of the Tirian sub-sector, and rushed the traitor guard fortifications. Meanwhile, the first company of the Golden Knights deployed on Vex, the sector's only agricultural world, and engaged elements of the Emperor's Children Traitor Legion upon the world. After nearly a month of fighting, the planet Aboras was recaptured by the forces of the second company while the fist company managed to secure several key fortifications on Vex, neither suffering many casualties. Using the footholds that the Custodes Regent made on Vex, the Tide deployed on the world of Vex and began a mass assault of the main Emperor's Children base upon the world.

During this push, a strike team of Gray Knights arrived with grave news, the Emperor's Children had managed to summon a pair of Greater Daemons of Slannesh to the planet. With this knowledge, the Custodes Regent, along with the Grey Knights, assaulted the summoning grounds of Emperor's Children. Upon arriving, they discovered something truly horrifying, a partially summoned Daemon Prince of Slannesh being guarded by the pair of Greater Daemons. The Daemon Prince, despite only being partially summoned, led the daemons against the astartes. Eventually, the Golden Knights defeated the Daemons at the cost of most of their number, as well as the entire Grey Knights strike team. However, as he was cast back into the warp, the Daemon prince announced that he was proud of his "sons" for besting him in combat. Knowing the daemons patron deity, the Golden Knights realized with shock and fear that they had just faced a Daemon Primarch, and he had just claimed that they were his sons.