Tau Squadron was the Elite Squadron of the Dark Brotherhood, and currently one of four present in the Tie Corps of the Emperor's Hammer.
Though Tau Squadron had been stationed in many places, it's last staging ground was from aboard the M-CRV Tripidium, the personal ship of the Grand Master - used while abroad on business that did not require more overt displays of military power.
History
In days before the first reign of Grand Master Jac Cotelin, a squadron, separate from the rest of the Brotherhood, formed. This squadron was known as Tau Squadron. However, as the Dark Brotherhood became engulfed in internal fighting, Tau Squadron under the command of DeathWatch abandoned the Dark Brotherhood with the infamous, Crona. When Grand Master Cotelin ascended the Iron Throne, Tau Squadron was not re-commissioned and was all but forgotten as the Iron Throne moved to restore order within the Dark Jedi ranks.
Upon the ascension of Grand Master Khyron, from the plea of Dark Jedi throughout the Brotherhood, Tau Squadron was returned to full status under the command of Dark Side Adept Magnus Kaerner.
Within months of re-commissioning, the Iron Throne demanded that Tau Squadron either join an existing House or create their own. Rather than tie Tau to any of the one Houses in existence that wished to exploit their skill, Kaerner opted for the latter. For the short time Kaerner remained as Quaestor, all Tau members were members of Tarentum. When Kaerner ascended to the position of Knight Commander of the Brotherhood, the practice was abolished. Tau retained its strict requirements, and with the exception of Kaerner, the entire squadron remained a part of Tarentum.
Tau Squadron continued in existence under the command of General Kaerner. However, his ties to the Empire proved stronger than his loyalty to the Grand Master, so he and the squadron were left behind during the Exodus. With their departure it was decided that a new unit would not be created to replace them - the role was filled by the GMRG.
Mission
Tau Squadron is the personal bodyguard of the Grand Master of the Dark Brotherhood. They escort him at all times that he is not residing in the Dark Hall and on business throughout the galaxy. What the Grand Master's Royal Guard is on the ground, Tau squadron is in the air and space.
Equipment
Tau Squadron is using a specially modified A-9 Vigilance Interceptor (A-9b).