Continuity mistake: At the beginning, when Rochefort walks out onto the balcony to address the Musketeers in the courtyard, the guard on Rochefort's left obviously changes halberd/pikes between shots as they are completely different. (00:08:20)
Continuity mistake: The word "DIREKTOR" written on the glass door of Schindler's office is little in one scene and bigger in another one.