Vitriol
The Vitriol is a Frigate in service to the Excoriators Chapter.[1]
It transported a squadron of Battle Brothers (led by Whip Torban Deker and Chaplain Titus Rhaddecai) to the Excoriators' Watch Fortress Semper Vigilare, which bordered the Eye of Terror and was part of the Cadian Gate's defenses; after the crew manning the Watch Fortress failed to act as the Death Guard vessel the Terminus Est, entered the system. While in the Semper Vigilare the squadron found the crew (including the Excoriators Space Marine sentries) had been killed, but were somehow reanimated and as they began to mindlessly attack the squadron. After the squadron had destroyed the reanimated crew, Chaplain Rhaddecai interrogated the Fortress’s machine-spirit and learned the crew had been infected by a Warp-borne contagion planted by the Death Guard.[1]
The Death Guard's fleet tender the Augmentra, had posed as a Adeptus Mechanicus vessel and docked with the Watch Fortress, allowing it to spread the disease that killed its crew. This allowed the Terminus Est to enter the system and wreak havoc upon the unsuspecting planets. Chaplain Rhaddecai ordered the Vitriol to destroy the Augmentra, before it could infect any other Star Forts and Watch Fortresses along the Cadian Gate; while he initiated the Semper Vigilare's immolation measures, which burned out the disease as well as the compromised squadron.[1]
