"...as accurate as possible."

It seemed, Sister Rose. But some things were definitely not accurate. For example, German soldiers, the Wehrmacht, etc., did not supervise the ghetto (as graphically depicted in the film); The Judenrat (Council of Jews) oversaw the Ghetto and the Jewish Ghetto Police were the "army" who actually carried out the rules and regulations of the Ghetto in order to "maintain order," "peace," and "compliance."