Warhammer: The Horus Heresy – Legions Imperialis: The Great Slaughter

Contained within this book you will find a comprehensive history of the Second Battle for Nyrcon City and the origin of the Great Slaughter 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 also includes new detachments for both the Legiones Astartes and Solar Auxilia Army Lists, providing new weapons of war for the forces of the Horus Heresy.

It also includes a complete Campaign system for linked battles.

—description from the back of the book