The Arado Ar 233 was intended for civilian use only but, later on in the development process, the Germans wanted to weaponize it and make it suitable for combat.
Some aircraft firms that worked for the axis power, were thinking about post war German civil aircraft early in the 1940s, in accordance with a request made by the Reichsluftfahrtministerium (RLM/German aviation ministry).
Some examples of aircraft designed for Germany for future civilian use are the Fw 206 and the BV 144.
The Arado firm responded with their own two engine float plane design because of the Fw 206 and BV 144.
Data from Jane's Fighting Aircraft of World War II[1]General characteristics Performance