This movie gives you insights of how great of nations the Germans are: hard work and obeying the rules as well as respecting the hierarchy almost at all costs, their attitude toward the work and their working culture in general under the most difficult of circumstances are just a few elements of the their success secret. No wonder that they rose to the to top of the world once and almost did that again after being completely flattened after WWII. It also masterfully depicts the fact that despite the hard work and dedication and sacrifice from many men on the work front, they were doomed to be defeated due to mismanagement and grave mistakes by the leaders above resulting in massive failure and causing all the hard work to yield nothing but catastrophe at the very end.
A very fascinating war film, however a bit too long, which gives insights from the other side of the war front, a well-made WWII war movie made by the Germans - we don't see that very often.
