good film, but it does contain certain historical inaccuracies...
It is entirely true that Adolf Hitler orginally wished to become an artist, but this was before the great war of 1914, not after. Hitler, who is austrian by birth, moved from his hometown of Linz to Vienna several years before WWI in the hope of becoming a well known painter. Unfortunately his paintings had little artistic merit and were judged to be mediocre at best.His lack of natural talent and artistic abilities is what caused him to be denied entrance to a prestigious viennese art institute to which he applied twice and was refused both times. He left Vienna at the outbreak of WWI to join the german army (he didn`t like the austro-hungarian empire much, far to ethnically diverse and un-germarnic for his teutonic tastes). When he left Vienna for Germany he was almost certainly quite disillusioned with the art world of that period. After the war, and the movie takes place in 1919 I believe, Hitler did not try and revive his artistic career, he did however work as a spy/rabblerouser for the german army for several months (as seen in the film) and quickly became enraptured by the complexe world of post WWI german politics and became involved in a then finge party known as the national socialists wokers party. The movie points out all these details but makes it seem like Hitler was torn between art and politics, which as far as I or any other histoiran knows was not the case. He never seriously considered becoming an artist again after his early rejections and disapointments.
Anyways I don`t want to seem like to much of a stickler for details, this film is fairly interesting and does offer its viewers an almost unique perspective of Hitler`s formative years. Technicaly I shouldn`t even bother to critisize because Cusack's caracter is fictional, the plot is entirely based on a hypothetical situation, namely what if Adolf Hitler was enticed into becoming an artist after all.