Hellsing Volume 8 (Second Edition) (manga)

London is drowning in blood, its citizenry being butchered by the Nazi vampires of the Millennium Organization. And marching though this slaughterhouse are thousands of fanatic Catholic warriors, ready to strike down any who oppose their god. But both undead and zealot alike will have to contend with the return of the vampire lord Alucard, slave-paladin of the British Protestants, piloting an aircraft carrier up the Thames to join the fray!