This film is far from perfect, though I'm overall quite glad I saw it. It's basically THE DIRTY DOZEN if the protagonists were all Germans serving on the Eastern Front. Sound interested? Well I was hooked right away.
The main strength to the film is the characterization. The three central characters are fleshed out pretty well and the interplay between them rings quite true. There's plenty of action sequences involving tanks, planes, and a fair amount of explosions but overall they're quite hindered by the low budget.
Problems here include a lot of confusing moments, character decisions, and anachronisms. For one, we're introduced to the heroes at the beginning of the film driving a soviet post-ww2 T-62 tank! Later they're seen manning two SU-122 tank destroyers, which were also soviet, but the film wants us to believe are STUG-III's which look nothing alike. Also, the heroes (a penal battalion) often speak irreverently of Nazis and SS, but the costuming department outfitted them with Totenkopf SS emblems on their uniforms.
However I must give credit to proper firearms. The uniforms overall look quite good though I wonder what a Russian 1939 early war hat would be doing on the front line in 1943/44. The Russian T-34/85's are quite authentic though with a lot of additions they wouldn't have had on in WW2. Overall the tank-fighting scenes are quite poorly done, though somewhat realistic in showing that tanking is a very cooperation-based profession.
Overall, this is a movie that will only appeal to WW2 buffs. It's a pseudo-comedy but it isn't really that funny, per-say. It's an action movie too, but isn't particularly bloody or violent either.