Journal Tactica: The Isstvan V Dropsite Massacre – Part One

Warhammer: The Horus Heresy – The Battle for Isstvan V
Betrayal ignites the Heresy.

On the desolate black sands of Isstvan V, the Emperor’s Retribution Fleet descended to bring Horus to justice. But what awaited them was not a swift victory – it was betrayal on an unimaginable scale. Loyalist Legions were ambushed by their own brothers as the Traitor forces revealed their true allegiance. This brutal confrontation would be remembered as the Dropsite Massacre – a moment that shattered Legions and changed the fate of the galaxy forever.

Relive the Betrayal

The Battle for Isstvan V is a 48-page narrative gaming supplement for Warhammer: The Horus Heresy, letting you recreate one of the most iconic battles in the entire Age of Darkness. This book dives deep into the events of the Dropsite Massacre and brings powerful new rules and missions to your tabletop.

Inside This Book:

• Lore & Narrative Content
  Explore the unfolding tragedy of Isstvan V, from Horus’ early treachery to the final, devastating betrayal.

• Unit Profiles
  Includes rules for:

  • Master of Descent

  • Augur Command and Control Squad

  • Hyperios Missile Tank

• Expanded Gameplay Rules

  • Interdiction Cadre Prime Advantage

  • Battlefield Assets rules for added tactical depth

• Legendary Scenario

  • The First Wave Mission: Recreate the Loyalist landings and the Traitor’s sudden assault in a narrative-driven scenario.

What You’ll Need:

To use this supplement, you'll need:

• Warhammer: The Horus Heresy – Age of Darkness Rulebook

• Liber Astartes (for Loyalists) or Liber Hereticus (for Traitors)

These books are available separately.

Step into the heart of betrayal and reshape history in the fires of the Heresy.
Isstvan V awaits.