Sentinels of the Forge

The Sentinels of the Forge is a Salamanders successor chapter, currently torn in two. An unknown portion of the chapter is trapped on their home planet within the warp (as seen in The World Engine), and another portion is fleet-based (As seen in The Tyrus Incident).

In The Warp
Cut off from the remainder of the chapter by forces unknown, part of the Sentinels of the Forge dwells on their home planet, Hadrian, within the warp. They are led by Chief Librarian Matthias. More forces are unknown at this time.

Fleet-based
After the loss of their high command, the remainder of the chapter seems to have moved on. In the Tyrus Incident, it is shown that the 10th company remains nearly intact, with Brother-Captain Galvesi commanding. More forces are unknown at this time.

Other Appearances:
In the Space Hulk Deathwatch Narrative Campaign, a Sentinels of the Forge cruiser was boarded, and was shown to be very ancient.

In the Storms of Ixia Campaign, Knight Munatius indicated he had pledged his loyalty to the Sentinels, and possesed an artifact that could open a portal to them. At the end of the campaign, a detachment from the Sentinels were summoned from the Warp to rescue the trapped Guard on Ixia