Siegfried and Walter Günter

Walter was responsible for the world's first rocket-powered and turbojet airframes, projects funded by Nazi Germany.

The brothers would be educated in mechanical engineering at the Institute of Technology Hannover, specializing in aircraft design and aerodynamics.

[2] It was there that Siegfried designed his first aircraft with fellow students Walter Mertens and Werner Meyer-Cassel, the glider H 6.

[2] On 16 January 1931, Ernst Heinkel recruited Siegfried Günter to work for his Heinkel company in Rostock, and Walter joined the company on 31 July 1931, where he was in charge of developing low and high-speed wind tunnels.

[2] Through their introduction of the elliptical wing-planform, their designs set officially recognized speed records.

He approached the Allies offering his expertise, which was refused along with his request for asylum, forcing him to return to the Soviet sector.