Betalis III - Betalis III Campaign: For centuries, the Aeldari of Mymeara sent out Rangers to search for the lost Phoenix Lord, although to no effect. When Irillyth was finally found, it was not by the Aeldari -- the human colonists on Betalis III, burrowing into the planet's crust in search of new natural resources to exploit, broke into a massive cave complex, the site of Irillyth's final battle against the alien enemies of Mymeara. In this last fight, the Mymearans' foes had been defeated, but as the Phoenix Lord saw in his vision, at the cost of his and the war host's lives. When the humans entered the cave, they triggered an arcane defence system located in Irillyth's armour that was designed to protect the Phoenix Lord's dormant spirit. This killed all of the intruding humans, and alerted the nearby Craftworld of the armour's presence. The Mymearans, now possessing the knowledge of where the Phoenix Lord had perished, forged alliances with other Aeldari forces and prepared for war to recover their ancient saviour.Betalis III was the site of the Betalis III Campaign fought in 894.M41 between the forces of the Imperium defending the system and the Aeldari who sought to recover the armour of the ancient Phoenix Lord Irillyth, the founder of the Shadow Spectre Aspect Warriors. The Aeldari of the Craftworld Mymeara brokered an alliance with the Craftworld Alaitoc, as well as Aeldari Corsairs from the Void Dragons, Sky Raiders, and Sunblitz Brotherhood who were aligned with it. These forces descended on the frigid world to recover the Phoenix Lord's armour before it was defiled by the human miners present on Betalis III. The Mymearans sought to reanimate Irillyth to fight once more for his people, as his spirit would have remained intact within his armour's Spirit Stone. Betalis III was reinforced by Imperial Guard regiments drawn from the Cadian Shock Troops and the Elysian Drop Troops as well as Titans from the Legio Gryphonicus and Space Wolves Space Marines. After the Imperial forces fought the Aeldari to a bloody standstill, the mysterious xenos vanished as quickly as they had arrived after they had recovered Irillyth.Although the Imperium hailed the Battle of Betalis III as a great victory over the enigmatic xenos, the truth -- well known to the Inquisition and the Ordo Xenos -- was wholly different. The Aeldari never intended to conquer the Imperial Mining World, which had no value to them. Their only interest was the Phoenix Lord Irillyth's armour, which, despite the efforts of Ordo Xenos Inquisitor Lord Hestaphus Danzk who commanded the Imperial forces on Betalis III, they succeeded in recovering and departed from the world as soon as they took possession of it. Betalis III's infrastructure was severely damaged as a result of the war.Aside from damage to facilities as a result of combat operations, the initial phase of the Aeldari attack saw the destruction of nearly the entire network of communications relay stations spanning the surface of three of the planet's continents. This damage would take time to repair in the frigid conditions of the world. Beyond the veil cast down by the disabled relay stations, the virtually undefended population suffered most. True to their darker natures, some of the Aeldari Corsairs did not remain on the eastern continents of the planet where the actual fighting took place, and instead raided the disparate human settlements.It came as no surprise to the Imperial authorities who had encountered Aeldari Corsairs before that when the Aeldari war hosts retreated, entire communities living in the planet's icy wilderness had simply vanished. The Craftworld Mymeara left its longtime hiding place in the Karina Nebula in the Betalis System after recovering the Phoenix Lord, and because the Aeldari no longer maintained it, this stellar phenomenon which was previously unexplorable to the Imperium eventually dissipated. This change allowed Mankind to gaze within this region of the system for the first time in history -- where they will discover that nothing of interest now resides.