Contained within this 128-page hardback book you will find a comprehensive history of the Devastation of Tallarn and the Fall of Sapphire City, as well as detailing the Loyalist and Traitor forces. This book features new Formations and Detachment Data Sheets for both the Legiones Astartes and Solar Auxilia Army Lists.

This supplement book presents a full campaign system for linking Legions Imperialis battles together, including Breakthrough Campaign rules, and an expansion to this system allowing players to fight the battles for the Northern Desolation. The book contains rules for fighting Legions Imperialis battles in Tallarn. You'll also find rules for Spearhead games featuring unique missions.

In order to use the content of this book, you will require a copy of the Warhammer: The Horus Heresy – Legions Imperialis Rulebook, available separately.