 The song met the inner mood of millions of soldiers of all armies who were fighting on both sides of the fronts and was translated into about fifty languages to become one of the global cultural "index fossils" of the Second World War.It was the first German million-seller.Schultze remained true to his profession and wrote numerous operas, operettas (such as "Rain in Paris"), musicals, ballets ("Struwwelpeter" written pre-war during his time at Telefunken) and "Max and Moritz" (), music for more than 50 movies, and songs.