Council of the Crystal Blade
Sometime in M42 they violently rejected the Tau Empire's attempt to annex the world, during the Fifth Sphere of Expansion. This led the Tau to launch a guerilla war against Hadrak's Folly, in an attempt to force the Council to peacefully surrender, and the Rogue Traders sent out several pleas for aid in response. One was answered by a ragged Battlefleet, who has now arrived and dispatched a complement of Catachan Jungle Fighters to aid the world.
- 1: Killzone: Sector Fronteris Environment Expansion (Sourcebook), pg. 5 - Deadly Wilds