WARHAMMER: THE HORUS HERESY LEGIONS IMPERIALIS – THE GREAT SLAUGHTERContained within this book you will find a comprehensive history of the Second Battle for Nyrcon City and the origin of the wars that would engulf the Garmon Cluster, detailing the Loyalist and Traitor forces that took part in that terrible conflict. As well as this complete narrative, this book includes new Formations and Detachments for both the Legiones Astartes and Solar Auxilia army lists, providing new weapons of war for these powerful forces.