This song is From the Battle of Britain film (1969) Its meant to be for the German Luftwaffe in the film, I suggest you watch it, it is really good Flag- German Empire Military Flag Circa 1914
Link to Youtube video- https://www.youtube.com/watch?v=8KRqVn7XWug&list=RDGMEMll9WgycvgT8CGLLPE45JNgVM8KRqVn7XWug&index=1
