13th Black Crusade - Gothic War's Outcome: To understand the full course and impact of the 13th Black Crusade upon the galaxy, it is first necessary to retell the tale of Abaddon the Despoiler's 12th Black Crusade, better known in Imperial records as the Gothic War.Like many sector-wide conflicts with the Archenemy, the Gothic War began slowly, with sporadic Chaos raids against smaller Imperial outposts in the year 139.M41.Vessels whose crews had been stricken with diseases sacred to the Plague Lord Nurgle were discovered adrift in the Athena Sector of the Segmentum Obscurus, along with sightings of the Chaos warship Plagueclaw, and Astropaths began reporting unsettling disturbances in the Warp that slowly cut off the Gothic Sector of the Segmentum Obscurus from the rest of Imperial space.Panic and anarchy became widespread in the Gothic Sector as fanatical religious sects arose, believing that the Emperor was displeased with them. Hysteria spread throughout the sector and on many Imperial worlds order broke down completely. The Imperial Navy lost several starships to "accidents" in space dock that were subsequently blamed on poor maintenance and faulty ammunition -- a rather too convenient explanation for many.Three standard years after the first Chaos raid on the Imperial listening post at Arx, in 142.M41, the forces of Abaddon the Despoiler, the Warmaster of the Black Legion and leader of the allied forces of Chaos Undivided, struck out at the Gothic Sector from the Eye of Terror.Abaddon's Chaos warfleets struck at a dozen Imperial bases and sent the warships of the Imperial Navy's Battlefleet Gothic reeling. Chaos starships attacked all across the Gothic Sector and the first inkling of Abaddon's true intentions in launching the 12th Black Crusade against the sector was to come to light in the Rebo System, where one of the mysterious xenos Blackstone Fortresses orbited the fifth planet.These massive edifices of unknown alien origin had been refitted by the Imperium to serve as orbital bases for the starships of Battlefleet Gothic. For the first time in the history of the Imperium, one of these fortresses fell to Abaddon's forces and he was soon to make horrifying use of the captured base's advanced alien technology.Abaddon's fleet possessed a devastating weapon, never before seen by the Imperium in the hands of the Forces of Chaos, called the Planet Killer. Its name was not simply born from the arrogance of its Dark Mechanicum builders, but was a well-deserved epithet as Abaddon demonstrated at the Cardinal World of Savaven.The account of the utter destruction of Savaven as witnessed by Jeremiah Soldagen, Savaven's orbital defence commander, still has the power to chill one's soul. His description of entire continents splitting apart, burning skies and the planet breaking up into pieces is solemn reading.Fourteen million people died within a single solar hour and the crippling effects of this on Imperial morale at the time should not be underestimated; many worlds were hurriedly -- though unfortunately not always entirely -- evacuated before the Planet Killer arrived.Another Blackstone Fortress fell to Chaos at the world of Brinaga. At Fularis II, Abaddon was to demonstrate the true power of these ancient xenos constructs.Exact information regarding the incident remains sketchy in Imperial records, but the evidence points to a massive energy beam being unleashed from the Blackstone Fortress that scoured Fularis II bare, stripping its atmosphere and transforming its surface into a barren, rocky plain.Imperial forces were continually engaged throughout the Gothic Sector, from the Hammerhead Deeps to the Cyclops Cluster, desperate to halt the might of the Chaos warfleets' Black Crusade. At the beginning of 151.M41, Lord-High Admiral Cornelius Ravensburg, the Imperial Navy flag officer in command of Battlefleet Gothic, took the fight to the enemy, resulting in the clash at the Battle of Gethsemane where he was able to utterly destroy a Chaos warfleet of considerable size.Craftworld Aeldari vessels also fought in this battle. Though many Imperial historians believe their role to have been minimal, the evidence indicates that the Asuryani's involvement against the forces of Chaos was considerable during the latter stages of the Gothic War through the use of their Webway gates.News of this great victory invigorated the Imperial Navy and as the Warp Storms that had isolated the Gothic Sector for over a solar decade began to abate as the Dark Gods grew wrathful and capricious at their forces' defeat, Imperial vessels from neighbouring sectors were finally able to reinforce the lord admiral's bloodied Battlefleet Gothic.Abaddon then brought the full power of the Blackstone Fortresses he had captured to bear on the star of Tarantis, the mustering point for the new Imperial starships entering the Gothic Sector, in an attempt to stem Battlefleet Gothic's reinforcements.Combining their power, the Blackstones destabilised the Tarantis star and caused it to go nova, destroying everything still within the star system in spectacular fashion.The final major battle of the Gothic War was fought at the world of Shindelgeist, where the Imperial Blackstone V still floated in the depths of space. A trap was sprung by the lord admiral and the Asuryani, who defeated Abaddon's greatest warfleet in a truly magnificient three-solar-day-long battle.In an act of spite, Abaddon sought to destroy the star there also and had it not been for the sacrifice of Captain Abridal on the Flame of Purity, the victory could have proved a hollow one.Abaddon had been defeated, though he escaped back into the Eye of Terror with two of his captured Blackstone Fortresses. Various sources claimed at the time that they must have been destroyed.Unfortunately, as the 13th Black Crusade would demonstrate, this was merely wishful thinking on the part of the Imperium.