Here is a concise, photographic history of the Siebel Fh 104/Si 204, a prewar, twin-engined aircraft that went on to fulfill a variety of roles for the Luftwaffe during the Second World War (e.g. in the training of bomber crews and night-fighter pilots) and for several foreign countries in the early postwar years (e.g. Poland, Czechoslovakia, France, and the Soviet Union).