Flight of the Cerberus — Blaze Ward

When Finn gets hired by an Anglo-Persian Princess/Adventurer to fly her to a secret rendezvous in the Egyptian desert, his troubles mount, as the Fascists in Rome and Nazis in Berlin seek to conquer the entire world. Her enemies become his, and will stop at nothing. Especially as she seeks a crash in the wastelands that might be an alien spaceship. She also pursues one of the crew who survived and now hides in the souqs of Cairo. The chase begins. Flight of the Cerberus, the start of the Air Pirates of Cyrenaica, a pulp adventure set in 1936 Egypt. Be sure to read Flight of the Condor next.