Aaron Dembski-Bowden
Blood And Fire

The Celestial Lions Space Marines are being targeted by the Inquisition and have been brought to the brink of extinction. Will they regroup and rebuild, or will they choose to go out in a final blaze of glory? That is what Grimaldus must decide...
Space Marine Battles
novella

Also in:
Armageddon
War For Armageddon: the Omnibus
Black Templars: Quick Reads Collection
The Third War For Armageddon