Toros Tertium

Toros Tertium is an Imperial fortress world in the Toros System of the Segmentum Obscurus, close to the sundered Cadian Gate. No finer coordinates are recorded.

Like Cadia it held a pylon array that kept the warp at bay after the Thirteenth Black Crusade. Under Governor Margravale Ostwynne it received substantial Guard reinforcement. After resisting World Eaters and Alpha Legion attacks it was besieged by Iron Warriors under Warsmith Kravek Morne as part of Perturabo’s Infinite Citadel. First Captain Darnath Lysander and Castellan Zweiland led Imperial Fists and Black Templars who prevented a rapid fall; Morne later left for Agripinaa, leaving a grinding siege.