Battlefleet Cadia - The Imperium Resurgent: As Quarren’s reunified, reinforced and reinvigorated fleet moved towards Cadia, theChaos fleet, including one of the Blackstone Fortresses, ancient engines of destruction built aeons ago by unknown xenos, gathered above the planet. In a manner none could have predicted, the Chaos fleet was unexpectedly delayed by lightning-fast attacks on the Blackstone by squadrons of Eldar Cruisers. LordAdmiral Quarren was quick to take advantage of the delay and his counter-strike (composed of vessels arriving from out of system) flowed from Cadia to Xersia and finally Demios Binary. In his first action, Quarren chose to strike directlyat the vessels in orbit around Cadia itself. The vast majority of Abaddon's forces had already been committed to the planet, so Quarren could do little to aid the struggle there, but his fleet did now have a massive opportunity to retake control of the space around Cadia and prevent Chaos reinforcements.Quarren attacked the Chaos fleet side-on, trapping the Traitor vessels between his own fleet and the planet Cadia where their superior speed would provide them little benefit. Even with the enemy trapped, the Chaos fleet still presented afearsome amount of firepower. By dint of this cunning stunt, Quarren succeeded,first in dividing the main fleet, and then in pursuing the defeated elements to final extinction. Only those squadrons that stayed close to the Blackstone Fortress remained a threat, but the Chaos fleet was now concerned with survival. Most significantly, the Imperial flagship Galathamor crippled the Merciless Death, driving it to the Warp from whence it took no further part in the war.As an act of vengeance, Abaddon dispatched the Planet Killer to Macharia within the Cadia System. A desperate boarding action by Space Marine Honour Guard companies failed to prevent the Planet Killer firing, but damaged its shields. As a consequence,debris from the shattered world that had once been Macharia struck the Planet Killer, which was last seen tumbling away into Wilderness Space critically damaged. When worlds in the Cadia System fell prey to the opportunistic Dark Eldar, the Relictors Space Marines stood ready and swiftly repelled the raiders, driving them back to their fleet. The Dark Eldar could not have expected Admiral Quarren would have set his fleet in motion so swiftly after fighting the Chaos fleet. His vanguard smashed into the Dark Eldar fleet and inflicted terrible damage and drove them out of the war in the Cadian Sector.At the Cadian Sector world of Kasr Patrox, the Traitor Legions of the Chaos Space Marines scored an immeasurable victory, though would themselves be slain by a most unexpected foe. High above them oblivion beckoned in the monstrous form of a corrupted Blackstone Fortress. The Blackstone Fortresses' weaponry beat downon Kasr Partox, remorselessly slaughtering the warriors of both sides. Faced with the certain destruction of Cadia's last defenders, Admiral Quarren had no choice but to muster his battered fleet for yet another battle. One by one the screening Chaos vessels were peeled away from the Blackstone until eventually it was forced to cease its attack and concentrate upon its own defence. With the end of the Blackstone's attack an uneasy lull settled on Cadia during which Lord Castellan Ursarkar Creed evacuated Kasr Partox while he still could.