The power of the Luftwaffe or Hitler's wings

At the beginning of 1934, the Technical Directorate (T-Amt) of the Reich Air Ministry developed technical specifications for a modern single-seat monoplane fighter to replace the Henkel He-51 and Arado Ar 68 biplanes. These specifications, together with an order for prototype machines, were sent to the leading aircraft design firms - Heinkel, Focke-Wulf and Arado Flugzeugwerke.