Inside this hardback codex you'll find: - The origins of the T'au Empire, their desire for unity through the Greater Good, and their will to expand as a species - A detailed description T'au's caste-based society, the various Spheres of Expansion, the Septs that form the Empire, and the technological and military might of the T'au - Background information on the Ethereals, as well as characters such as Aun'Shi, Shadowsun, and Commander Farsight - A showcase of stunningly painted Citadel miniatures - 37 datasheets for the units that make up the T'au forces, from squads of Fire Warriors, to incredible Battlesuits, and heavily armed tanks - Battle-forged rules that represent how the T'au wage war, from Sept Tenets, Cadre Commands, Independent Powers, as well as Bespoke Stratagems, Prototype Systems, and more. - Crusade Rules that let you bring the Greater Good to various planets through overpowering force and subtle diplomacy - And more!