The Space Marine Legions of the 31st Millennium are the most powerful military force ever assembled — an elite brotherhood of genetically enhanced warriors supported by cutting-edge war machines. These armies forged the Imperium during the Great Crusade, but as the Age of Darkness descends and the Horus Heresy ignites, these once-united forces are torn apart, plunging the galaxy into a brutal civil war.

The Loyalist Legiones Astartes Army Book is an essential guide for anyone looking to command a Loyalist Space Marine Legion in Warhammer: The Horus Heresy. This comprehensive volume contains all the rules you need to field the vast array of units available to Loyalist forces — from core squads and vehicles to specialised wargear, unique units, and the legendary Primarchs themselves. Whether you’re leading the stoic Imperial Fists, the savage Space Wolves, or the noble Blood Angels, this book provides everything to bring your army to life on the tabletop.

Inside this 328-page hardback book, you’ll find:

• Extensive lore and background on the Legiones Astartes, their history, structure, and the famed warriors who defend the Imperium.

• Rules and unit profiles for building your army, covering all units, weapons, and wargear available to Loyalist Legions in The Horus Heresy.

• Legion-specific special rules for each Loyalist Chapter, including unique Detachments, signature units, exclusive wargear, faction abilities, Reactions, and Gambits for:

  • Dark Angels

  • White Scars

  • Space Wolves

  • Imperial Fists

  • Blood Angels

  • Iron Hands

  • Ultramarines

  • Salamanders

  • Raven Guard

• Primarch Profiles with rules for fielding the legendary leaders of each Legion, including:

  • Lion El’Jonson

  • Jaghatai Khan

  • Leman Russ

  • Rogal Dorn

  • Sanguinius

  • Ferrus Manus

  • Roboute Guilliman

  • Vulkan

  • Corvus Corax

• Visual showcases featuring heraldry guides, colour schemes, and a gallery of beautifully painted Loyalist Legion miniatures for inspiration.

Please note: You will need a copy of the Warhammer: The Horus Heresy – Age of Darkness Rulebook (available separately) to use the contents of this book.