Source: Flying Review International July 1969

During the mid thirties, Fieseler received a contract from the Technische Amt of the Reichsluftfahrtministerium for the design and construction of a pilotless drone possessing a relatively high performance and suitable for use as a target for anti-aircraft artillery. The drone was to be carried aloft beneath a bomber, released and subsequently controlled by radio. Fieseler's proposals were accepted and three prototypes were ordered under the designation Fi 157. Simultaneously, Fieseler proposed a piloted version, the Fi 158, which could be used for experiments in remote radio control. Three prototypes of the Fi 157 were tested but all crashed.

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