Dust Blood — G.P. Taylor

Jago could feel the teeth sink into his skin. It burnt like a fire of molten lead that trickled through his veins.
Jago Harker is trying to adjust to his new life at Hawks Moor. But when news reaches the house of a madman on the loose killing Vampyres, he knows it's only a matter of time before they come for his companion, Biatra.
As the Second World War rages all around, Vampyre is set against Vampyre when two factions of the ancient cult clash in violence. And as he prepares to go to war with his greatest enemy yet, Jago will soon discover the truth about his own identity in a world where true power lies in the hands of the blood-drinkers and where, even in love, no one can be trusted.