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The T'au Empire is amongst the most dynamic and determined powers in the 41st Millenium. Their technology is advanced and ever-improving, from grav-skimming gunships and artificial intelligence, to potent energy weapons and formidable battlesuits. Their territories expand with every victory, be it military or diplomatic. Yet the T'au Empire's greatest strength is its unifying philosophy – they believe it is their duty to spread the doctrine of the Greater Good to every corner and culture of this dark galaxy, and will let none stop them from bringing enlightenment to the stars.

Codex: T'au Empire is a vital guide for collecting and playing games with the T'au Empire and its alien allies in Warhammer 40,000. You'll find an absolute treasure trove of information to help you muster, paint, and command your armies – including rules for narrative Crusade campaigns, Combat Patrol skirmishes, and matched play games. There's also a stunning spread of painted miniatures, evocative artwork, and immersive background material to inspire you for the Greater Good.

Inside this 136-page hardback book, you'll find:
– Background material detailing the T'au Empire, including its rigid caste system, varied sept worlds, and meteoric expansion, as well its long-time allies amongst the Kroot
– Inspiring artwork that sheds light on the sleek aesthetic, complex technology, and alien auxiliaries of the T'au Empire
– 38 datasheets detailing the profiles, wargear, and unique abilities of every T'au Empire unit, from Stealth Battlesuits to savage Krootox Rampagers
– Four themed Detachments, including the Kauyon and Mont'ka metastrategies, as well as dedicated Kroot Hunting Packs, each with their own set of special rules
– Crusade rules to launch a Sphere Expansion of your own, as you assimilate new systems through diplomacy and conquest
– Combat Patrol rules and a painting guide for playing fast-paced games with the Sudden Dawn Cadre
– An 'Eavy Metal showcase of superbly-painted Citadel miniatures to inspire you, featuring different T'au septs and Kroot kindreds

136 pages, Hardcover

Published May 11, 2024

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About the author

Games Workshop

1,017 books109 followers
Games Workshop Group PLC (often abbreviated as GW) is a British miniature wargaming manufacturing company. Games Workshop is best known as developer and publisher of the tabletop wargames Warhammer, Warhammer 40,000 and The Lord of the Rings Strategy Battle Game.

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Displaying 1 - 4 of 4 reviews
1 review
September 28, 2025
You make me pay $90 AUD for rules that immediately become obsolete upon launch date with balance updates... Legalised criminal activities smh.
268 reviews1 follower
June 14, 2024
Containing all the information needed to field T’au Empire armies in the tenth edition of Warhammer 40,000 in the normal, Combat Patrol, and Crusade versions of the game.

The T’au part of the book’s background is the usual mix of lore from older versions that has either been copied, tweaked, rewritten or updated. The Kroot, however, has been expanded quite a bit to go with the plethora of new models that they have received for this edition. The two short stories included in the section are quite good with the first giving an interesting look at how the Water Cast operate, while the second is a nice piece that shows the Kroot in action. The artwork is as good as always (the double page spread of Farsight fighting on Arthas Moloch for the second time, from Arks of Omen; Farsight, is my favourite), as is the model Showcase section, although I would have liked to see a few more colour schemes on show beyond the typical T’au, Vior’la and Farsight Enclaves ones.

The rules section of the book contains all the usual Datasheets and Detachments, as well as the Combat Patrol and Crusade rules, all of which are pretty standard for this edition of the game. The four Detachments included in the book allow players to build armies focused on the Kauyon and Mont’ka tactics, a Battlesuit heavy army or a Kroot heavy army. These Detachments all seem reasonably good but the Battlesuit heavy one, and the Kroot one, seem to have the most character. The Crusade rules are pretty much the same as for the previous edition, revolving around conquering planets through either military or diplomatic means.
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436 reviews19 followers
January 1, 2026
The great good. (The greater good). Or heresy.
Displaying 1 - 4 of 4 reviews

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