Made soon after the few survivors of Stalingrad returned home, wounds were still fresh & deep when this film was released just 14 years after the unconditional surrender. This film is important because was one of the first German post-war films to critically examine some very difficult & painful areas for the Germans.
Interestingly we never see Hitler's face - I'm sure there are a few reasons for that. The film addresses the lie that the Allies of Germany, Rumania (and Italy et al for that matter) were poor troops. They were good soldiers but were indeed poorly equipped & supported.
There have been criticisms for mis-matching of stock footage, incorrect tanks (T-34/86 instead of T-34/76) & subtitling. Most of this is minor, for example mistaking "Oberst-Leutenant" (Lt-Col) for "Oberleutenant" (Snr Lt) and mis-spelling General Hoth's name (as "Hooth"). The translating of "break-out" as "break ranks" is trivial. The actual footage spliced in may be of different battles but given the time & place this was made it seems a reasonable thing to do. In the end, getting squashed by a Russian tank or disintegrated by high explosive shells is much the same experience wherever you do it.
No, 14 years was not long enough for a deep introspection but this film made a solid start down that path. Well worth seeing. Look out for the exceedingly & implausibly beautiful Sonja Ziemann.