Jimmy Stewart is great in this film which is highly remarkable for depicting nazi germany with American actors and in english. The ending also seems like it inspired the ending motorcycle sequence of the Great Escape. You'd imagine this film would have been highly controversial to make in the year right before America joined the war. It's a look inside the Hunnic barbarian culture that led to the rise of Nazidom well before America really had a true understanding of the Holocaust and what was actually going on in Europe.
It's notable that this film was regarded as the first truly successful anti-nazi film made by Americans and shows the extent of America's ambiguity of alliance going into WW2. Many people were on the fence about fighting the Nazis for a while and America held an isolationist stance for so long.
The ending sequence of this film is also in step with the use of the camera without actors and employing shots and suggestions of narrative in a way that is creating subtle artistic cinema. It shows a whole sequence of