Imperial Armour III: The Taros Campaign is a Forge World supplement covering the Imperial defence of the world of Taros against a Tau Empire invasion. Alongside the 16 historical scenarios that recreate the campaign's battles, the book provides a large body of standalone army-list material collected here:
- A full set of Tau Empire vehicles — gunships, battlesuit variants, super-heavy flyers, and Kroot Mercenary auxiliaries such as the Great Knarloc herds.
- Imperial Guard siege artillery (enclosed Basilisk and Medusa variants, the Bombard, and the Griffon) and additional Imperial Guard vehicles (Drop and Support Sentinel squadrons).
- Single-vehicle entries for the Imperial Navy (Aquila Lander) and Space Marines (Thunderhawk Transporter).
- The Warhound Titan, a Super-Heavy Tank war machine.
- A full alternative Imperial Guard army list, the 23rd Elysian Regiment: Drop Troop Army List, for fielding an air-mobile Elysian Drop Troop force.
- Short doctrine/army-list notes for using Tallarn Imperial Guard and Tau Auxiliary Forces (human Gue'vesa and Mining Work Gangs) on Taros.
- Sixteen historical scenarios re-fighting the battles of the campaign.
The book's three rules appendices — Super-Heavy Vehicles, Flyers, and Death from the Skies — are covered as their own pages.
- Tau Empire Vehicles (18 pages)
- Imperial Guard Siege Artillery (4 pages)
- Imperial Guard Vehicles (2 pages)
- Imperial Navy Vehicles
- Space Marine Vehicles
- Warhound Titan
- 23rd Elysian Regiment: Drop Troop Army List (14 pages)
- Tallarn Imperial Guard
- Tau Auxiliary Forces
- Scenarios (16 pages)
- Appendix I: Super-Heavy Vehicles
- Appendix II: Flyers
- Appendix III: Death from the Skies