Nalardom Crusade

The Nalardom Crusade was an Imperial crusade, aimed at conquering and securing the myriad star systems of the Essentha Expanse in the depths of Segmentum Obscurus, considered as part of the larger galactic-scaled Indomitus Crusade. The campaign was the creation of Corradino Breda, Chapter Master of the Aetherian Warriors chapter of the Adeptus Astartes, following the reclamation and cleansing of the Aetherian Warriors' homeworld and surrounding subsector just a few years prior. The Aetherian Warriors, along with their two newly-formed successors, a collection of other local Space Marine forces, and myriad units of the Imperial Guard and Navy, launched a rapid and brutal offensive, aimed first at relieving the besieged Civilized World of Nalardom before spearheading out into the rest of the expanse.
Across the Essentha Expanse, the Crusade's forces waged bloody and violent battles against the local Ork Empire of Thraggrokka, as well as the ever-increasing number of Chaos-aligned cults springing up on Imperial worlds, including massive warbands pouring out of Warp Storms and the Great Rift itself. Despite this though, the Crusade made steady progress, fully claiming a dozen star systems in just over the first year of the Crusade, whilst delivering the righteous fury of Mankind to hundreds of millions of aliens and heretics.
==Background==
===Prelude===
The origins of the Nalardom Crusade would be found in the dying embers of the Reclamation of Atargatis, a campaign launched to retake the Atargatis system, specifically Atargatis II, homeworld of the Aetherian Warriors, from a large Traitor force that had occupied both Atargatis II and most of the system. The campaign, while brief, saw massive devastation done upon almost all the inhabited worlds of the Atargatis system, and had a lasting impact on the reclamation force's commander, Corradino Breda.