Duelling high above the trenches of the First World War Biggles knows that he needs more than just flying skills to survive against the Sopwith Camel - a devil to fly, but invaluably fast in a dog fight, it commands fierce loyalty from its pilots. Will Biggles' luck and initiative be enough to keep him alive?

goodreads summary

At the end of WW1, Biggles and fellow pilots contend with enemies in their own Sopwith Camels. "The Camel closed up until it was flying beside him; the pilot smiling. Biggles showed his teeth in what he imagined to be an answering smile. 'You swine,' he breathed: 'you dirty, unutterable, murdering swine! I'm going to kill you if it's the last thing I do on earth.'"