Horus Heresy: Journal Tactica: Mailed Fist
| Released on: April 4, 2026 |
| Barcode: 9781837791866 |
| Short SKU: 31-152 |
| Published by Games Workshop |
| Games: |
3 at Valhalla Hobby
48-page softback book
- Background lore
- New unit profiles
- Leviathan Missions – game rules that let you play massive multiplayer asymmetrical games featuring armoured warfare