HORUS HERESY JOURNAL TACTICA: MAILED FIST (Release 2026-04-04)

Horus Heresy Journal Tactica: Mailed Fist is a supplement for Legiones Astartes for Warhammer: The Horus Heresy, focusing on super-heavy war machines, their background, weaponry, and battlefield role. It expands your game with additional missions, rules, and unit options.

It explores the largest armoured assets deployed by the Space Marines when the stakes are highest – massive battle tanks capable of destroying enemy war engines and even threatening Titans. With deep lore and expanded gameplay, this supplement adds a heavier, more cinematic scale to your battles.

On the Battlefield

This supplement introduces rules for large-scale armoured engagements where super-heavy units take centre stage. Asymmetrical missions and multiplayer options create dynamic battles where strategy and resource management are key.

New unit profiles and upgrades provide more options for building and fielding armoured forces, especially in armies focused on heavy firepower and battlefield dominance.

Product Information

This is a 48-page softcover supplement containing rules and content for Warhammer: The Horus Heresy.

Contents

• The Fist of the Legions: background on major Legiones Astartes armoured assets
• Mission rules:
  • Vaults of Thrasis Legendary Mission
  • 3x Leviathan missions with asymmetrical objectives
• Additional Profiles and Liber Addenda:
  • New Battlefield Assets
  • Unit Profile for the Whirlwind Missile Tank
  • Legion Decurion upgrades for Fellblade and Falchion

Requirements

• Warhammer: The Horus Heresy – Age of Darkness Rulebook required
• Liber Hereticus: Traitor Legiones Astartes Army Book or
• Liber Astartes: Loyalist Legiones Astartes Army Book required