Erich Bachem joined the Gerhard Fieseler Werke GmbH in 1933, and by 1941 was working in the company’s Advanced Projects Office, for which he designed the Fi 166 Type II “horse-and-rider” interceptor concept seen here, which incorporated a rocket for launching fitted to the underside of a twin-engined fighter design. Bachem left Fieseler to establish his own company in February 1942.