Tau shift focus to Ergura's Fall

The Tau scouting forces had gathered a significant amount of important information about enemy dispositions at Haven and Ergura's Fall by early 11.022M42, and the decision was taken that Haven might prove too difficult with their existing resources to conduct a successful invasion. Instead, the Tau sent a battlegroup to Ergura's Fall, and after successfully evading enemy fleets, deployed an entire Hunter Cadre to the world.

The initial landings went well, with the Tau able to set up a supply base for further operations. This was fortunate as the Imperium had also landed a significant force, and a confrontation on the rolling plans of the world was inevitable. The first encounter was with an astartes force, which was the first indication to the Imperium that the Tau were on Ergura's Fall in any kind of significant force. The battle turned into a rout, with the space marines all but annihilated. However, the Tau were also unaware of the full strenght of imperial forces on the planet, and were taken by surprise a few days later, by a counter attacking Custodes force.

The second engagement did not go well for the Tau, who lost their commanding officer and were forced to flee back to their more defensible positions near their main base. The Tau had managed to establish a presence on Ergura's Fall, but had by no means asserted control over the world.