The Horus Heresy spans innumerable desperate battles and bitter grudges – many lost to history, other the subject of grim and terrible rumours. The champions who fight these far-flung battles are unlike any in the galaxy's history, warriors armed with inimical strategies and esoteric weaponry, locked into struggles across sprawling arcologies, towering citadels, and claustrophobic tunnels.
In this book, you will find five accounts of battles from the Age of Darkness - The Defence of Sotha, The Siege of Hydra Cordatus, the Battle of Armatura, The Atttack on Calth and The Purging of the Invocastus Sector - along with the campaign and missions rules to recreate them on the tabletop in games of Warhammer: The Horus Heresy.
This 112 page hardback book also includes new rules for five notable Legiones Astartes units unique to Legions that fought in these battles – the Night Lords, Iron Warriors, World Eaters, Ultramarines, and Salamanders – as well as expanded rules for the Emperor's Children Traitor Legion, and complete rules for their ascended Daemon Primarch, Fulgrim Transfigured.
—description from the publisher