Story is pretty decent but the ending is wraps up way too quick. Aside from the obvious bad uniforms and German accents, the set dressing could have been much better and the German HQ is also used in another Ben Mole film. As an indie filmmaker I understand how hard it is to make films on low budget but the producers in this film clearly had little military history advice on weapons, tactics, military culture and bearing (or maybe they did but it didn't show). The camera work is decent and lighting efficient. As others have mentioned the boxing scene punches are clearly not hitting each other which adds to the feeling of low budget. The two main a German officers are not very believable and the script a bit too cliche.
