The military chaplain, wearing Roman Catholic garments, recites the the Lord's Prayer. In the Dutch translation it is however the Protestant version of the prayer, ending with the phrase "Want van U is het Koninkrijk, de kracht en de heerlijkheid tot in der eeuwigheid.." This phrase is not used by the Catholics.
The Dutch soldiers were not treated like Nazis coming home. Despite the were not treated with honor, the deeds been done up there (the bad deeds in this case) were long time unknown for the dutch civilians and not educated for years on schools.
There was in those days not a dark blue Nazi killing team. This said: it is true the Dutch killed innocent civilians and suppressed the country for quite some time.
In many parts of the film the diet of Dutch soldiers is misrepresented, at some point characters are seen eating cooked potatoes, which is not a native food to Indonesia. More logically they would be seen eating the more conventional food staple rice. Similarly, there is no evidence of Dutch soldiers eating rhesus monkey meat.
In the scene where the Japanese soldiers are stealing someone furniture, Westerling points his gun at the Japanese officer's head and tells him his soldiers should stand down. When the officer does not comply, Westerling pulls back the slide of his semi-automatic, effectively only then chambering a round. This means that initially he was holding the gun without a round in the chamber and could never have fired it, a mistake a seasoned soldier would not make.
The Dutch called the capital of the Dutch Indies 'Batavia.' No Dutch soldier would call it by its Indonesian name 'Jakarta,' as one does in the movie.
Film is set in Java, but the situation of Raymond Westerling took place in Southern-Celebes (now Sulawesi).
The barong and Balinese traditional dance are not common entertainment in Semarang..