The History of this formation goes back to 3000 BHL when the High Guard became the last line of Taiidani defense against the Hiigaran incursion. Sajuuk's Wrath in addition to the entire Hiigaran Navy hyperspaced behind the Taiidan defense formations to strike at the capital of the Taiidan Empire. The High Guard in its entirety engaged the aggressors, but did not stand a chance against this enormously powerful ship and its escorts. As a result the Taiidan Imperial Palace was destroyed as well as all military facilities on Taiidan.
During the Homeworld War, the High Guard was first encountered by the Kushan when Captain Elson, attempting to escape from pursuing Taiidan forces, stumbled onto the Exile fleet and requested assistance. Despite being a member of the High Guard, Captain Elson and a small number of Taiidani sympathizers decided to defect from the Taiidan Navy, due to the increased amount of corruption occurring within the Taiidan government.
The Taiidan High Guard was also assigned to guard the Hiigara System. This included Hiigara and the hyperspace inhibitor network. However, the Kushan knew the location of most vulnerable station, thanks to the help of Captain Elson. After a lengthy battle, the Kushan managed to breach the defense of the station, capturing or destroying the many Ion Cannon Frigates assigned to secure the station.