HISTORY: Hitler really did have just one ball: historian. “After Hitler’s arrest in 1923 following his failed Beer Hall Putsch, the future Führer underwent a medical exam, according to documents found in a Bavarian archive by University of Erlangen history Professor Peter Fleischmann. At the Landsberg prison, Hitler was examined by Dr Josef Brinsteiner, who found that he suffered from ‘right-side chryptorchidism’, or an undescended right testicle, Fleischmann told Bild.”