Edification Corps

The Edification Corps is an organisation of T'au political officers within the T'au Empire, which appears to have been created at some point between the Fourth and Fifth Sphere Expansions.

Mutiny on Junica
Their first known action took place some time after the Tragedy at Numenar Point and the dissappearance of the Fourth Sphere fleet.

During the difficult campaign against Chaos forces on Junica, T'au Commander O'Ryn refused Aun'Va's orders -- maybe because the fact that the deceased Ethereal Supreme had been secretly preserved as a solid-light hologram might have been revealed by a tank shell impact that slew his retinue. In doing so she became the first T'au since Farsight himself to disobey a command from an Ethereal.

Several days later, an Edification Corps fleet descended upon Junica with the intention of detaining O'Ryn's entire command, only to find that the Commander and her loyal warriors had fled to the Farsight Enclaves. All witnesses to O'Ryn's act of treason were sequestered, and the remaining cadres on Junica broken up and dispersed across the empire.

Fifth Sphere Expansion
Years later, when the Fifth Sphere Expansion found the survivors of the Fourth at the other end of the Startide Nexus, vessels from the Edification Corps were a common sight around the Fourth Sphere Gate in Nem'yar Atoll, as the T'au political officers cross-examined the survivors of the ill-fated expedition.

Recruitment of the Charpactin
The Edification Corps is known to have drafted many Charpactin, whose strobing bursts of ultraviolet colour have proven surprisingly effective at subduing and transfixing living beings, rendering them docile and amenable.