Flag of the Kriegsmarine
In Raiders of the Lost Ark 1981 Harrison Ford plays as the dashing and heroic archaeologist in pursuit of the biblical treasures. He travels the world from Asia to Arabia on his quest.
Upon his grand discovery of the Lost Ark, he takes a life and death chance to get it back. He secretly boards a German Sub and puts his faith in the unknown. The pic above shows Indy boarding the German Sub. Luckily for Indy, the sub does not submerge before arriving at its secret location in the Greek Isles. In the far distance his allied shipmates are cheering him to save Marion and to protect the Lost Ark.
Raiders of the Lost Ark 1981
Kriegsmarine Nazi Flag as it appeared from the obverse
The WWII Kriegsmarine flag appears from the obverse side in this movie. The flag of the German Navy during WWII featured a black and white Scandinavian cross centered on a swastika on a red field.
Hollywood is one of the few places where you can get people to pay you money to wave a Nazi Flag in front of your face - but remember context is key. In 1981 G. Lucas and S. Spielberg were successful in waving the Nazi flag and in the same work of art at great profit, burn the American Flag.