Not Warnemünde,warmtoast, but you are getting "warm" in a geographical sense, and by that I don't mean a ridiculous 1400 miles or so !
Gosh - this has me confused!
A circle drawn 1400 miles from Rostock runs through Southern Spain so is your non-clue
I don't mean a ridiculous 1400 miles or so !
actually a clue? - and perhaps these aircraft were photographed somewhere in Spain during the Spanish Civil War? In which case I've no idea where it could be so far south.
Otherwise how about Wismar in Germany?