Xana Incursion - Unwelcome Guests: Even as the Cicatrice Tyrannis and her escorts entered close orbit of the immense gas giant Xana I on final approach to the Forge World itself, the auspex grid of the outer planetary system came alive with emergency signals and alarms. Perilously close to the gravity-shadow of the system's inner sphere, realspace ripped open and the brute and barbed shapes of scores of warships forced their way out of the Warp.The tracking augers and void-cogitators of Xana's sleepless defensive engine-minds swept the intruders, quickly analysed the fleet, and came to the absolute conclusions of hostility, swinging into baleful wakefulness. No fewer than five capital class vessels were identified, Imperial in origin and Loyalist in allegiance, with no effort made to hide who or what they were.At their head was a vessel immediately identified as the Amphion, one of the mighty Gloriana-class Battleships and an example of the type which often provided the flagships of the Legiones Astartes themselves, outfitted as a pure device of void-born firepower, and one of the lynch pins of the Solar fleet itself.With these capital ships came a slew of smaller escort craft and a dozen transport craft whose anomalously over-powered emissions marked them as one thing only to the cold intellect of the Machine Spirits; fire ships, loaded with warheads and volatiles designed to inflict catastrophic damage in suicide attacks against their targets.Machine Spirits conferred with magos, and with blinding speed beyond Human comprehension was data analysed, checked and re-analysed, conclusions drawn and tested, re-submitted and issued as directive.This then was Rogal Dorn's judgement come at last, or at least part of it, the make-up and composition of the powerful fleet indicated a raid-in-force, not an invasion, with its target the waiting fleet of loaded macro-conveyers, protected within Xana I's debris rings.Terra had decided that if they were not to have the bounty of Xana's forges for themselves, then none would, and calculated that the risk of deploying several potent heavy units from Terra's own defence armada was worth the reward this mission of destruction entailed.With faultless precession, the defenders of Xana rose to meet their aggressors; squadrons of frigate-sized machine sapient hunter-killers and scores of autonomous weapons platforms rose from within the vaporous depths of Xana I's atmosphere to protect their master's wealth and spat their payloads with synchronised fury, sending hundreds of void torpedoes hurling towards their target, the plasma drives of the shark-like hunter-killers blazing in their wake.From their own stations on allotted patrol routes across the planetary systems, Xana's own interstellar warships, battle-arks and attack carriers in the main, far larger than the local defensive vessels, awoke and burned at maximum thrust to intercept the Loyalist assault force, the attack of which, despite the bravery and skill of its Navigators who had dropped the force into realspace close enough to be hours rather than days distant from their intended target, could still be contested before it reached its goal, or at the least a lethal trap would close behind the intruders.Calculations were checked and tactical projections run and re-run thousands of times in bare seconds, secondary waves of munitions roared forth from the surface of the Forge World of Xana II itself and its own sentinel void-battle servitors -- mechanical Kraken the size of strike cruisers -- broke from their steel shells like hollow moons and powered towards the fray.As the white blood cells of a Human body swarm and overwhelm an invading virus, so would the war machines of Xana II swarm and overwhelm this unexpected attack, no matter its power.