10/16/2026
December 12, 1942. A crippled B-17 slides to a stop on its belly in a muddy field southeast of Paris, and hands the Luftwaffe a part Germany would never manage to build in real numbers.
The crew of Wulf Hound did everything they were trained to do. They smashed the radio, burned the maps and slipped into the woods. But under each of the bomber's four engines sat something nobody thought to destroy: an exhaust-driven turbosupercharger. It was no secret. German engineers had understood the principle for decades. Yet when a captured Fortress reached the Luftwaffe test center at Rechlin, the men who wanted it most were not fighter pilots. They were engine specialists.
So why couldn't the nation of Daimler-Benz, BMW and Junkers simply copy it?
The answer runs through a cancelled German fighter, a Luftwaffe test pilot's candid admission, and one of the strangest sources of American wartime engineering you will ever hear about.