In "The Bloody Red Baron", the vampire Ball, already horrifically mutilated and burnt to the extent his flying uniform is fused to his flesh, is captured by vampires and tied in a crucifix position. Using his new crooked stance to maneuver himself, he gnaws off his own hand, then stakes one of his awoken captors with his own arm bone.
The first time the mutant vampire man-bats of Jagdgeschwader 1 fight Allied Condor Squad, its a total rout and the Allies are crushed. However, they remain brave to the end, and Biggles gets thrown from his plane after shooting a man-bat in the face with his flaregun. The text even mentions how unflappable he is, seemingly about to die. Despite falling, he somehow survives and makes his way back to the Allied lines by the end of the war.