Hellsing OVA Season 1 Episode 13 Hellfire

Alucard and Incognito's battle rages on, each fighter taking a beating and giving another back, neither side making any progress. As Integra and Walter head out to the Tower of London to see what exactly is happening, they get a surprise attack from the British military. Integra is shocked when she then realizes what Incognito's true motives are. Alucard is the only hope left for this world.