Hammer's Wrath

Hammer's Wrath is the name of the Penitent Crusade undertaken by the Hammer Guard Space Marine Chapter, following the corruption of the Chapter's 2nd Company during the Ortevian Heresy.

History
Following the events of the Ortevian Heresy, the Hammer Guard Chapter came under scrutiny by the Holy Ordos of the Emperor's Inquisition. As the Inquisition investigated the Hammer Guard, it became more evident that the 2nd Company had been corrupted and fallen to Chaos, with the possibility of the taint spreading to the rest of the chapter. Faced with the possibility of being declared Excommunicate Traitoris and being put to the sword, the Hammer Guard agreed to penance, embarking on a penitent crusade into the warp rift known as the Maelstrom. To them, they fought the forces of Chaos for 300 years, losing many Astartes and even suffering the loss of the 5th Company as it was separated and lost in the Maelstrom. But when they returned and were interrogated by the Inquisition, they discovered that a mere 150 years had passed, and the 41st Millennium awaited them.