The movie became the first movie of the national socialistic politic that required every student in Germany to see the movie in class.
While not mentioned in the movie, obviously due to Nazi agenda, Hans Hermann von Katte, who helps Friedrich to flee from his father and who was later beheaded, had also a sexual affair with crown prince Friedrich, which is also documented. Since 1729 they became lovers. After his death it is known that Friedrich the Great never visited von Katte's grave again.
After 50 minutes of run-time, in one of the main scenes of the movie, King Friedrich Wilhelm I is shown burning his son's French literature books which he doesn't approve, along with his flute in order to make him a good leader. Two years before this movie, in 1933, this event happened all around Germany when the Nazis publicly burned books of writers which they either didn't approve or didn't fit with the agenda of the Nazis, including books of Jewish writers, communist books, pacifistic books etc.