Palantir secured for imperium

The end of the Alliance campaign against Palantir came in late 11.019M42, with a surprise attack from the Grey Knights. The tau force defending the last major space port open to alliance forces were savagely attacked by the astartes, in a move which caught the xenos entirely unprepared. Not expecting an assault from yet another faction of humanities finest, the tau forces were outmatched and overrun, while the Kel Sandros Aledari, fighting the alien genestealers on Hexis, did not have the military resources to be in two places at once.

The defeat of the tau on Dale left the small Federal alliance force stranded on the world, so the federal air force led a daring rescue mission to retrieve their compatriots from the surface. Using a light cruiser to approach the world, squadrons of Thunderbolts loyal to the "one true King Leto of Cerberex", broke through the atmosphere to escort the transports sent in to execute their mission. They were met in combat by the Librian XXVIII air wing, a "loyal" faction if the now federal system, but this did not appear to cause any confusion in the air. The loyalists fought the sepratists hard, but the federal air force's firing accuracy and weapon potency was superior, leading to a crushing victory for the alliance and the rescue of their military agents. Palanti however, was back in the hands of the Imperium.