The constant turmoil surrounding the Cadian Gate requires Battlefleet Cadia to be far more active than many other battlefleets. The whole sector exists in an almost perpetual state of readiness, and as such the demands on manpower and resources are huge. Vast numbers of new, inexperienced ratings frequently have to be drawn up to replace those lost in the constant fighting (many of them drawn from worlds within the Cadian System itself such as Vigilatum and Macharia). However, those that survive the harsh first years of military service around the Cadian Gate rapidly mature to become some of the most capable leaders in the Imperium. As with all highly militarised zones, it is important for the Imperial Navy to maintain substantial reserves of vessels around the Eye of Terror, ready to depl