Anno Dracula - The Bloody Red Baron, Paperback/Kim Newman

It is 1918 and Dracula is commander-in-chief of the armies of Germany and Austria-Hungary. The war of the great powers in Europe is also a war between the living and the dead! The Diogenes Club is at the heart of British Intelligence and Charles Beauregard and his protege Edwin Winthrop go head-to-head with the lethal vampire flying machine that is the Bloody Red Baron...