Tau
WH40K wiki wrote: The Tau are an arguably benevolent race fighting for what they call the Greater Good. They claim to be a peaceful race when possible, asking if others will join their cause instead of fighting. However if their peaceful overtures are refused, the Tau may well decide to conquer the planet for the greater good, searing the flesh from the bones of anyone who stands against their benign expansions.
Tau society is divided into a number of castes, each responsible for a specific aspect of society. The Tau ideal is that everyone in the empire will work for the good of everyone.
The Tau are the central figures of the Tau Empire, which is composed of several species, primarily the Kroot of Pech, the Vespid of Vespid and the nomadic Nicassar, though there are now several human-Tau Septs. The Tau are a relatively young race (6000 years, Imperial Inquisitors first noted of the Tau when they were still experimenting with fire or the wheel), having evolved rapidly over the past few millennia. Not keeping with the trend of young races, the Tau have made remarkable leaps in technology.
The Tau’s physiology is closely tied to their society, with the Tau of each caste effectively being a subspecies of the Tau race. This was initially a result of adaptation and evolution to suit the environment each group of the proto-Tau species found themselves in, although interbreeding between castes was later forbidden by the Ethereals.
The Tau are humanoid in shape, although they have hoofed feet and four-digit hands (three fingers and one thumb). Their skin is grey-blue (although this can vary in pigmentation between worlds), rough in texture, leathery, and exudes almost no moisture. Their faces are flat, wide around the eyes, with an “I”-shaped slit running from the center of the forehead to where a human’s nose would be. Tau vision is considered slightly superior to humans - their visual spectrum extends a little more into the ultraviolet and infrared wavelengths. However their pupils do not dilate giving poorer depth perception and slower focusing reflexes than Humans. The olfactory organs are inside the mouth. Physical strength and size varies between castes, with the Fire Caste being both weaker and shorter than the average human.
Only two female Tau have ever been illustrated. The first, Commander Shadowsun, appeared to have a more human face than male Tau; being smoother and sleeker with larger eyes, a nose-like facial feature and a “Y” shaped facial slit. It is not known, however, whether Shadowsun is representative of all female Tau. The second, the subject of an imperial dissection, had the facial characteristics of a male Tau.
The Tau do not possess psykers (indeed, their minds barely register in the warp at all) and as a result have little knowledge of the Immaterium beyond its existence. This gives them some level of resistance to warp-based powers effecting the mind, but it offers little, if any, protection against physically-manifested offensive powers. They are largely unaware of the perils of the Immaterium and for this reason the Tau have conducted research into the Warp on Medusa V, however, the conclusion was reached that further research was unfeasible, and that “the Warp is no place for the Greater Good and is best left to those foolhardy races who cannot pull back from that terrible realm." Also with no other knowledge of the warp none of their starships can perform “Warp Dives” meaning that all worlds the Tau have colonized are relatively close to one another.
Ethereal Caste members also have a diamond shaped bony ridge on their head. It is believed by Imperial scholars that they exert a pheromone-based or latent psychic control over the other castes, but this is mere speculation, and no evidence of this has been found.
Tau Warriors are extremely weak in melee combat(thus being slaughtered by Chaos and Ork, melee oriented races), depending on Kroot Mercenaries to fight in close combat. Though due to sharp eyesight and patience, the Tau have proven themselves extremely accurate sharpshooters.
The Tau tend to look upon other races as backwards or misguided. Before the commencement of hostilities they almost always try to reason with their opponents and establish some kind of agreement. Noted exceptions to this are the Orks and Chaos, with whom the Tau have little to no diplomatic relation. This is due to the fact that the Tau see no way to reason with them, and do not want them in their empire.
The Tau employ a caste-based system that places the good of the many over the good of the few. In Tau society, every person is viewed as an essential part of the whole. Social standing is judged primarily by a beings standing within caste of the Tau, with 'La being the lowest (Shas’la: Fire Warrior, Fio’la: Earth Worker, Por’la: Water Bureaucrat) and 'O being the highest (Shas’O: Fire Commander, Fio’O: Earth Planner, Por’O: Water Ambassador). The castes are as follows:
Fire (Shas) — The Fire Caste compose the bulk of the military for the Tau Empire, and as such are the Tau most often used in the game. They average as tall as or slightly shorter than an average human, and are generally muscular. This comes from the fire caste’s origin on the plains of T’au, the Tau home world, where they survived as hunters and warriors. Tau from the world of Vior’la tend to have slightly greater muscle mass.
Earth (Fio) — The Earth Caste is composed not only of laborers and technicians, but also artisans, scientists and engineers. They are usually credited with the significant leaps in technology that the Tau enjoy. The members of the Earth Caste form the foundations upon which the Tau Empire is built. The inhabitants of this caste are generally short and stout of build.
Water (Por) — The Water Caste is primarily composed of merchants and diplomats. They are tasked with seeking and maintaining diplomatic relations with the other species of the Tau Empire, as well as maintaining the ease of communication and cooperation between the other castes. The Water Caste are generally taller and slimmer than other Tau, and favor diplomatic training and social grace over confrontation or combat. They are more capable in communicating with the languages of other races than most other Tau. From the time when the Tau discovered the Imperium, there are several accounts where Water Caste ambassadors were dispatched to Imperial worlds, and those worlds turning over to the Greater Good without a fight.
Air (Kor) — The Air Caste of the Tau function not only as messengers, but also as the bulk of the Tau Navy. The Tau of the Air Caste are even taller and more slender than the Water Caste, with long, skinny appendages and hollow bones. These traits are attributed to their lives lived mostly low to zero gravity ships and space stations. This is exacerbated by Air Caste reluctance, if not outright refusal to land on planets, as their skeletons have atrophied to the point where injury and broken bones are commonplace. In the past, before the time of the Mont’au, the Air Caste had membranes stretching between their limbs, which allowed them to glide on air currents. Tau pilots are recognized as superior to human pilots due to their better depth perception and fighter craft, though lack a normal Imperial pilot’s level of experience.
Ethereal (Aun) — The Ethereals are the leaders of the Tau. They resemble the Fire and Water Castes physically, but are marked by a diamond-shaped ridge of raised bone in the center of their foreheads. Their origins are unknown, and most Tau will never refuse a request by an Ethereal. They are sometimes also found on the battlefield, but whether as leaders or observers remains to be seen.
One of the conspiracy theories surrounding the Tau concerns the Ethereals control over other Tau, and how the Ethereals initially managed to unite a fractured, nomadic people constantly at war into a single whole force. The proposed causes of this range from the psychic (As displayed in the Tau novel Fire Warrior) to the biological, that the Ethereals diamond-shaped forehead ridge produces a set of pheromones that make Tau, and to a lesser extent other species, open to suggestion. This was introduced after people complained that the initial Tau codex described the Tau in too much of a positive light, and that they were too “good” for the 40k universe. This also led to the Vespid communion helms, which have a much clearer Orwellian feel that the Vespid are being directly manipulated thanks to the helmets that are supposedly for “communication purposes."
The Greater Good is the central philosophy that unites all Tau. It says that everyone one is equal and plays an important part of Tau society. It tells them to put away petty squabbles and unnecessary things to unite for the greater good of the rest of the race. As implied in Dawn of War: Dark Crusade, the Tau have no intention to destroy religion or culture. However, these enhancements are rarely wanted by the other races of the galaxy.
Tau warfare is carried out almost exclusively by the Fire Caste, with support from the Air Caste in the form of transport and air support. The Tau draw their tactics from their ancient methods of hunting. Each force is usually drawn from the same Sept, and is called a Hunter Cadre.
The Tau prefer to carefully plan their assaults, and tend to fight only after coordinating their troops and weapons for the mission at hand. The Tau prefer to fight offensively, concerned more with the quick destruction of the enemy than the taking and holding of ground. If a Tau base is attacked, the Tau will usually evacuate, dismantle all important technology, and return at a later time to retake it.
The two primary Tau tactics are the Mont’ka (Killing Blow) and Kauyon (Patient Hunter). The Mont’ka is a carefully planned attack designed to wipe out critical enemy defenses or units in a single well-placed strike. Once the strongest points of enemy resistance are crushed, the remainder of the force can generally be finished off easily. The Kauyon is essentially an ambush, where the enemy is drawn by use of a “lure” into a carefully prepared killing zone. The Mont’ka is generally known to utilize more mobilzed support and vehicles, whilst Kauyon relies more on advanced infantry tactics and quick attacks.
As Tau forces generally prefer ranged combat they always use auxiliaries like the Kroot for melee support. One Tactic is when a squad of Fire Warriors stands in front of the task force, making use of the superior range of their weapons to soften up enemy formations. A squad of Kroot Carnivores waits behind the Fire Warriors. When enemy units charge to engage the Tau in melee, the Carnivores leap in front of the Fire Warriors to give them time to retreat to a safe firing position.
The Tau, though extremely young compared with that of the Imperium, possess some of the strongest weapons in the galaxy.
The Pulse Rifle
This weapon being the most common amongst the fire warrior caste its range and firepower far surpasses that of the imperial’s standard Lasgun. The weapon works well with the Tau way of war as it allows extensive firing grounds to make the kill, making their hunter tactics extremely effective. It works by using an induction field to propel a particle, which reacts by breaking down to create a plasma pulse as it leaves the barrel.
Pulse Carbine
The carbine sacrifices range for portability and so it can have more power then a regular Tau weapon. The weapon works in the same way as its cousin but is a lot more effective when the prey gets too close as it is much easier to get working in tight situations, and the rate at which it can be used usually knocks the charging enemy off balance, forcing them to halt their advance, unless there is too much momentum behind the charge. The pulse carbine is also equipped with an underslung photon grenade launcher (see photon grenades below) for further firepower.
Pulse Pistol
Recently issued to Tau personnel as a hold-out weapon this is only normally used in desperate situations. Again this weapon works the same as its big brothers only on a smaller scale.
Rail Rifle
Where this version is a lot smaller to what is usually used in Tau warfare, the Rail types use electromagnetic linear accelerator technology to project a solid projectile at hypervelocity. So even in its smaller size this weapon can lay down some impressive firepower.
Kroot Rifle
A primitive slug-thrower relying on chemical propellant and the transfer of kinetic energy, after contact with the Tau the weapon has been adapted to fire a pulse round, this gives the weapon much more stopping power. The Kroot themselves have also adapted the weapon to suit them by adding staves at each end of the rifle for deadly effect in close combat.
Kroot Gun
A much larger version of the Kroot Rifle. Being that heavy it must be mounted on a Krootox and a Kroot that is dedicated to its use. Because of its size and calibre it was designed with heavily amoured troops and light vehicles in mind.
Vespid Neutron Blaster
This weapon as its name suggests is for the Vespid Stingwings. It is a hybrid of Vespid and Tau technology, as the Tau devolved the weapon specifically with the Stingwings in mind. As the Stingwings emit a certain frequency that they use for communication, this is used in the weapons trigger system so only the Stingwings may use it. Its ammunition is again specifically designed for the Stingwings as the crystal mounted upon each blaster is grown on Vespid (The planet) these emit a powerful neutron blast that is able to bypass all but the most well shielded armour.
Markerlights
This is commonly used in the Tau’s way of war as it allows for the utmost accuracy when targeting the enemy. It projects a simple beam upon a target, and it is used to guide other weapons to it. Normally this will be to guide the seeker missiles to a heavily fortified area, or even to take out the enemy from extremely long range. it is also commonly used in ambush tactics as it is used to mark up the enemy positions so that multiple targets may be destroyed simultaneously causing havoc within the enemy lines.
Photon Grenades
A defensive grenade that blinds and disorients attackers with multi-spectral light and a sonic burst. It is hardly used in offensive situations as Fire warriors do not normally charge enemies into combat and they are too complicated for Kroot hands therefore they are thrown at charging enemies so that the Fire warriors can dispatch them quickly.
EMP grenades
EMP grenades emit a brief electro-magnetic pulse that overloads circuitry, causing fires, meltdowns and other critical malfunctions, sometimes leading to large explosions.
Honour Blade
This is a long, broad-bladed spear mounted on a lightweight metallic shaft. The honour blade is used to settle disputes between Ethereal caste members in stylised bloodless duels. Ethereals often master this sword so well that it becomes almost invisible when wielded making its extremely hard to land a blow never mind defend yourself.
Bonding Knife
This is a ceremonial knife, not intended for combat, carried by the leader of the Fire caste warrior teams who have performed the Ta’lissera ritual and bonded as a group. Among Fire warrior squads it is considered a making of brotherhoods, they live, fight and die together.
Here is some basic information about the Tau.
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“When in doubt, assume the person is undead and kill him."

