I own a copy, it's one of my favorites. Disregarding the story line, there are a lot of details you can pick up regarding the German army in 1918. The lieutenant wears a 1918 cut out stahlhelm, which to Germans probably symbolised the end of the war. The film was made in the early thirties, and there must have been a lot of vets in the audience. Look for the Bavarian singing a little ditty while engaged in a cootie hunt in the trenches. Cool equipment and uniform details. A great flick!
Steve