Steel Confessors - Notable Campaigns: Battle of Kracsis IV (745.M41) - The Steel Confessors valiantly defended their original Chapter homeworld, the Forge World of Kracsis IV, from the attack of the first Tyranid assault upon the Imperium, Hive Fleet Behemoth. Unfortunately, the Tyranids proved to be too much for the Steel Confessors and despite the valiant defence put up against these xenos horrors by the Confessors, they were forced to retreat from Kracsis IV and watch as all of its biomass was absorbed by the hive fleet before moving on. The battle was costly for the Chapter and claimed the life of its Chapter Master at that time, Protonus. Yet the Chapter survived and built a new home upon the Forge World of Kalevala.Battle for Kalevala (997.M41) - In 997.M41, the Steel Confessors faced a new Tyranid menace, this time in the form of Hive Fleet Leviathan. The Battle for Kalevala was once again fought on the Steel Confessors' own homeworld against the invading Tyranids, though this time the Chapter determined that there would be a very different outcome when they faced off against the Great Devourer. The entire Chapter of the Steel Confessors successfully engaged in battle against the Tyranids of the Leviathan. The world of Kalevala was home to the Steel Confessors' fortress-monastery, their Chapter's gene-seed stores, a major Adeptus Mechanicus manufactorum complex as well as a full psychic choir of astropaths that boosted the Astronomican to allow navigation through the difficult currents in the Immaterium created by the Tyranid Hive Mind's psychic shadow in the Warp. This being the Chapter's homeworld, there was no choice other than to defend it in open battle from the forces of the Tyranid hive fleet. The battle was colossal and brutally straightforward, with each of the ten companies of the Steel Confessors taking up defensive positions around the Mechanicus manufactorums and their fortress-monastery while the Tyranid horde attacked unrelentingly in an attempt to overwhelm the Astartes' firing lines. Despite the incalculable number of Tyranids present on Kalevala, the disciplined regimen of volley fire from the Steel Confessors' Tactical Marines and Devastator Squads, combined with surgical counterattacks by the Assault Squads, Veteran Squads of the 1st Company, and Land Speeder squadrons flying between battlefield locations to lend their firepower to those companies that were struggling, eventually thinned the Tyranid horde while minimising Space Marine casualties. The Tyranids finally depleted their own numbers after consistently throwing themselves without regard into the sustained fire of the Astartes' guns. At the end of the battle, the 8th and 10th Companies of the Steel Confessors had been utterly wiped out, the 1st Company was at 40% operational strength, the 3rd and 6th Companies were at 60%, while the rest of the Chapter's companies still possessed between 20-40% of their standard operational strength. Yet Kalevala had held against the swarm and the Leviathan soon moved on to seek easier prey. The Steel Confessors still had possession of their homeworld and there would be no repeat of the humiliation that had been suffered on Kracsis IV.