Badab War - Subjugation of Galen (910.M41): The beginning of the year 910.M41 proved to be a final deathly calm before the oncoming storm which would inevitably see the Badab War brought to its terrible conclusion. Many of the Chapters on the Loyalist side had suffered substantial losses and now would be replaced by other Space Marine Chapters of even darker renown. The Maelstrom Zone would soon be visited by slaughter unlike anything it had known in its long and turbulent history.For six long standard years the isolated Galen System had been a prize that had been battled over repeatedly, changing hands between Loyalist and Secessionist forces several times. Most significantly the Galen System had been the site of a major battle between the Fire Hawks Chapter and a mixed Secessionist assault force which had incurred heavy losses on both sides, a battle which had seen Galen II's life supporting domes laid waste, leading to mass refugee immigration to its neighbour, the Frontier World of Galen VI.Under the direct command of the Magister Militum Carab Culln, the Loyalist forces diverted to impose order on Galen VI, crushing any hope of future resistance utterly. Accompanied by an Ordo Hereticus detachment under Inquisitor Kramner, one of Inquisitor-Legate Jarndyce Frain's personal aides, the only stipulation was that the planet was to remain habitable with a sufficient core of the population and infrastructure left alive and intact to service the needs of the Imperium's war effort.Plans to retake the world were calculated accordingly, under the direction of the Sons of Medusa Chapter's "Iron Thane" Vaylund Cal, the theatre commander. The Sons of Medusa launched an orbital bombardment of predetermined landing zones on the outskirts of the Old City. They then claimed three company-strength landing zones on the edge of Galen VI's Old City, encircling it and destroying all resistance.Over the course of three solar days and nights the industrious Sons of Medusa landed supplies and additional Astartes and began the task of fabricating new fortifications and bastions. On the dawning of the fourth day, an unnatural fear and dread had descended upon the several million surviving inhabitants. This fear was a calculated weapon oft employed by the Sons of Medusa. Without warning the Chapter launched a large armoured assault composed of Rhinos, Razorbacks, Land Raiders and hulking Dreadnoughts, while Land Speeders took to the skies.Alongside the green livery of the emerald-armoured spectres of death was the crimson colours of the Inquisition's Chimeras and Repressors. From their vehicle's laud hailers the Inquisition demanded the  surrender of all of Galen VI's population for immediate judgement. Some of the population hurled themselves suicidally at the embodiment of the Emperor's wrath only to be ruthlessly cut down by the Sons of Medusa, while other cowered in their hastily-prepared defensive positions or attempted to flee the city.Those that attempted to do so were ruthlessly cut down by the patrolling Land Speeders and Vulture gunships. Those that offered serious resistance within the city were isolated and destroyed. Only those that offered no resistance were spared, ignored by the Sons of Medusa as they had been so ordered. These survivors wept openly, joyful only to be taken by the Inquisition's troops for processing and judgement in the Holy Ordos' assize-bastions located in the Imperial landing zones.The Old City was firmly in the hands of the Imperials within 56 solar hours of the commencement of the Sons of Medusa's attack. News of the massacre soon spread across Galen VI, and a shroud of terror descended upon the planet. Before long, millions of natives and refugees alike surrendered, even though to do so was believed to be a death sentence at the hands of the Inquisition, rather than live in fear of what was to come.The ruins of Old City were re-purposed and rebuilt as an internment and processing centre to handle Galen VI's population. Overall, the Galan campaign was considered a success, although much of the population of Old City had been slain. The total death toll was considered light compared to that of a lengthy, planet-wide campaign of attrition. Amazingly, the Ordo Hereticus was merciful, indenturing the majority of the planet's population into a lifetime of penal servitude to pay for their crimes and transgressions against the Emperor.As a result, the Departmento Munitorum raised a number of fresh Penal Legions from the most hardened elements found on the world, while the rest of the population was set to toil on Galen VI itself or deported elsewhere within the Maelstrom Zone to aid the rebuilding effort. The Sons of Medusa departed Galen VI shortly thereafter, leaving the planet as a veritable prison world whose population would pay for their crimes against the Imperium for generations.