Malkaor removes chaos threat from Mimir

With the bulk of the Emerald Serpent elite forces carrying out the invasion of the Goreen system and the Emperor's Children so few in number, the bulk of the defenders of the chaos worlds in the Mimir system were made up of Darrantine Guard formations, with support from the traitor Knight House the Aether Striders. These were thought sufficient by the Chaos factions to defend their holdings from the beseiged federal forces on New Titania, but Malkaor was able in mid 08.018M42 to send a significant task force to the system via the warp lane from Echo Reach.

The combined strength of the tau and federal fleet at Mimir left the chaos forces isolated on their worlds, and separate assaults were carried out on each world almost simultaneously. Despite having access to powerful equipment and a number of Knight phallanxes, the Emerald Serpent had no defensive positions or fortifications, and were caught in the open against withering Tau firepower supported by the air cast and imperial navy. On all three worlds the battles became a shooting gallery, and within a week all three were pacified and returned to alliance control.

Chaos had been removed from the Mimir system, and the Tau immediately began work on bases and fortifications on the newly named worlds, Asashin ha, Shinda kishi and Yukan'na shobo-shi. The Federacy would have to accept once again that they needed the Tau in order to prosecute successful operations in the Hadron Expansion Sphere.