Walter Horten (born 13 November 1913 in Bonn; died 9 December 1998 in Baden-Baden, Germany) and Reimar Horten (born 12 March 1915 in Bonn; died 14 March 1994 in Villa General Belgrano, Argentina), sometimes credited as the Horten Brothers, were German aircraft pilots. Walter was a fighter pilot on the Western Front, flying a Bf 109 for Jagdgeschwader 26 in the first six months of World War II; he eventually became the unit's technical officer. Reimar was also trained as a Me 109 pilot; however, later in August 1940, he was transferred to the glider pilot school in Braunschweig. He earned his PhD in mathematics from the University of Göttingen, having resumed his studies in 1946 with help from Ludwig Prandtl. The Hortens designed the world's first jet-powered flying wing, the Horten Ho 229.