I get this from a friend:
Hi Srecko,
I have already spent quite a time on this one, but have no conclusive answer to it at the moment. I have searched (intuitively) in the German area, probably end of the war, to the equivalent of guided missiles. That produced the different Siemens torpedo bomber which could carry a torpedo and was guided by wire and another one, which may be this machine.
The Flieger-Funker-Versuchabteilung of the Flugmeisterei Adlershof [in the background of your picture can possibly be seen a big hangar door at Adlershof ] made a series of radio controlled aircraft and missiles under the command of Engineer Erich Niemann. working together with Professor Schmidt and Villehad Forssman (of the Mannesmann-Mulag factory). Trials with radio controlled and with missiles were made. Their machines used the code-name 'Fledermausapparate' [Bat-machine].
There is some similarity with the French Détable radio-controlled pilot less aeroplane of 1917, which also had rather curious 'wing' construction.
I will search on.
Cheers
Kees