The Vitrian Third Dragoons were a Imperial Guard Regiment that fought in the Sabbat Worlds Crusade. They were described as being dark-skinned and tall, and noble. They were unique due to the fact that they wore 'glass' armour that covered their whole bodies. Their C.O during the Crusade was a Colonel Zoren. They had a good working relationship with the Tanith First, and their C.O, Colonel-Commissar Ibram Gaunt. The two regiments fought alongside each other on Fortis Binary, and helped to destroy the Shriven positions there, although they took considerable losses. Once the battles on Fortis were over, the two regiments were conveyed to Pyrites, to recuperate. Later, en-route to Menazoid Epsilon, Zoren and Gaunt worked together against the Jantine Patricians and their insane leader, Colonel Flense. When they arrived on Menazoid Epsilon, the Tanith First pushed ahead, driving back the hordes of cultists defending the shrine moon. The Jantine Patricians were trailing then, waiting for the order to strike from Lord High Militant General Hechtor Dravere, who wanted control of the Sabbat Worlds Crusade, and planned to ursurp Warmaster Macaroth. When the Jantine Patricians had destroyed Sergeant Blane's platoon, and were about to fall upon the bulk of the Tanith First who were already engaged against cultists, Colonel Zoren led his outnumbered Vitrian's into the rear of the Jantine, killing hundreds. They destroyed the whole regiment, although they took losses. After this the Tanith and Vitrian regiments parted ways. According to Feygor in Straight Silver, the Vitrians have been rotated back into Crusade reserve, much to his resentment.