On the desolate plains of Isstvan V, the Retribution Fleet arrived to bring Horus to justice for his treachery. Yet, the corruption ran far deeper than any loyal servant of the Imperium could have foreseen. As the Loyalist Legions deployed on the black sands of the Urgall Depression, the unthinkable happened—brother turned upon brother, and the Horus Heresy erupted into full-scale civil war. This brutal betrayal would be forever remembered as the Dropsite Massacre, a moment from which some Legions would never recover.

The Isstvan V: Dropsite Massacre is a narrative gaming supplement for Warhammer: The Horus Heresy, allowing you to relive one of the most pivotal and devastating battles of the entire conflict. This book provides new units, missions, and special rules to recreate the horrific ambush where the Traitor Legions unleashed their treachery upon the unsuspecting Loyalists.

Inside this 48-page softcover supplement, you’ll find:

• Rich lore and background detailing the events of the Dropsite Massacre, from the earliest whispers of Horus’ betrayal to the cataclysmic revelation of mass treachery.

• Unit Profiles for:

  • Master of Descent

  • Augur Command and Control Squad

  • Hyperios Missile Tank

• Expanded rules including:

  • Interdiction Cadre Prime Advantage

  • Battlefield Assets for enhancing your strategic options during games.

• Legendary Scenario: The First Wave Mission—a narrative battle that allows players to reenact the Traitor Legions’ initial assault on Isstvan V.

Please Note:

To use the contents of this supplement, you will need copies of:

• Warhammer: The Horus Heresy – Age of Darkness Rulebook

• Liber Hereticus: Traitor Legiones Astartes Army Book or Liber Astartes: Loyalist Legiones Astartes Army Book
  (All sold separately)