Prosperine Spireguard

The Prospero Spireguard was the title given to the regiment raised by the Imperial Army consisting solely of Prosperine citizens. These regiments saw almost exclusive service with the Thousand Sons Traitor Legion. The term is now rarely used to refer to the Chaos-worshipping traitor guard forces used by the Thousand Sons and their successor warbands, who contain little to no traces of the original natives of Prospero.

History
Formed from the natives of Magnus' homeworld of Prospero, the Prospero Spireguard took part as an auxiliary force in several campaigns for the Thousand Sons before and after the Horus Heresy. Those who did not join in the expeditionary fleets of the Thousand Sons were instead used as a defensive force for Prospero itself. During the First Battle of the Fang, where Magnus the Red led Thousand Sons to the Space Wolves' homeworld of Fenris, most of the post-heresy Spireguard forces were slain. It is not known whether or not fragments may still exist of the original Spireguard within the ranks of the Thousand Sons, kept alive by the unnatural ways of the Chaos Sorcerers so common within the Traitor Legion.

Notable Prospero Spireguard

 * Sokhem Vithara - Sokhem was an officer within the Prospero Spireguard during the end of the Great Crusade and the beginning of the Horus Heresy. He and his company were last reported taking part in the heavy fighting against the Space Wolves during the Fall of Prospero. His true fate is unknown.