Surprise attack at Mimir

While the imperium were pushed out of the Foramen and the alliance were assaulting Hussaria, the Emerald Serpent realised that eventually the forces of the tau would turn their attention to their vital stronghold of Boltarean. Deciding on a pre-emotive strike, the forces of chaos launched an invasion of The weakest alliance system - Mimir. 

Invading one of the outer worlds the chaos force challenged the alliance to respond. This they did, with a cadre of Malkaor’s troops reacting and seeking to remove the enemy forces. As the tau responded, the Emerald Serpent summoned a host of nurgle daemons, unleashing a deadly infection of pox on the enemy troops. Worse still, as the tau were forced to leave their defenders positions to face the daemonic threat, the obliterators then appeared, massacring the tau infantry and isolating the heavy xenos units. As the elite terminator force teleported into the heart of the action the tau force withdrew, rationalising that the outer worlds were not worth the losses. Meanwhile the federal and tau forces began to prepare their defences against the vital world of New Titania.