The Order of the Island's Blood
This group of rangers showed up on Thain once all the troubles started happening and set up posts to protect the citizens from the new threats. They were mysterious to most, but it was discovered that the Blood Guard and the Brotherhood were once a combined force being trained by the Elves. When the Blood of the World was discovered the force split off into their respective groups, with the Island's Blood (their proper name) using the magma to craft their armor and weapons.
This magma, the Blood of the World, was corrupted by three sisters who tried to raise their dead father, the god of law known as Amauntor, by controlling the Blood Guard to turn Thain into an island of unwavering law. Not of their own control, the Blood Guard managed to take over Steinkreis and displace Kampfer during a coup. Through the actions of Celia Lane, Steinkreis was retaken without bloodshed, and once the three sisters along with their weapons were destroyed, their influence over the Blood Guard ended as well.
The Blood Guard left Thain in shame, with Captain Terril serving a sentence of life in the cells of Blackstone Prison. Captain Rieganne was killed before the three sisters' influence had ended and her body is unaccounted for.
