First Founding is the latest supplement for Deathwatch. The First Founding Legions were crafted by the Emperor himself, and they forged the Imperium in bloody combat as they waged the Great Crusade across the galaxy. First Founding details the nine Chapters directly formed from the loyalist Space Marines Legions, and includes new rules from solo modes to new advances specialities. Of these nine Chapters, First Founding features the final four Chapters not discussed in previous Deathwatch rulebooks. This exciting supplement includes the background of the nine Traitor Legions and their fall to the seduction of the Ruinous Powers.