Imperium claim the device on Corticant

Throughout its interventions Kel Sandros had always been careful to limit its involvement, preferring to engage in lightening fast strikes aimed at rebalancing critical nodes within the complex web of fates. With a surgical strike the flow of events could be directed down threads more favourable to the Eldar's objectives before the warhosts once more withdrew and allowed the bulk on the fighting to be carried out through proxies and pawns. For a single Craftworld to attempt to orchestrate events on a galactic scale it was the only viable option.

Occasionally the council of Kel Sandros would find itself with no option but to fight its own wars and such a theatre was on Corticant. Although they could call upon the support of their Alliance partners the Aeldari would have to bear the brunt of the fighting themselves and it was critical to maintain control of the device chamber before the lumbering meatgrinder of humanity's massed armies. Left with no other choice the Aeldari looked towards the forest of whispers and the legions of their warriors long dead to aid them in the coming battle.

As the massed ranks of the Imperial Guard ground towards the excavation site the slender, haunting forms of ghost warriors strode out of the billowing sand storms to engage them. Charging through the stinging storm and screaming devotions to their corpse emperor hordes of religious fanatics were cut down by their silent enemy. The elegant alien constructs seemed largely untroubled by incoming fire, as if protected by the raging dust storm or perhaps more eldritch means.

But by engaging in such a manner the Eldar were fighting on the Imperium's terms. With cold detachment the commander of the Novgarod regiments allowed his fraternis militia to charge headlong into the enemy so that they might be pinned in place whilst disciplined ranks of Novgarod  Guard followed up behind. But it was the armoured support that did the real damage, pre sighted onto the positions of their own men they callously fired into the fray with little care for who they hit. The militia were already doomed, joyously giving their lives for the master of mankind, but one by one the ghost warriors fell as their armoured carapaces were smashed apart by heavy munitions. Unable to fight through the horde of bodies to the armoured units inflicting the real damage the Aledari were forced to retreat and abandon the excavation site to Imperial hands.