The Geste family crest, seen in Flavia Geste's first visit to Geste Manor, and again under the end credits, has the family motto misspelled as "NIL SEPERATUM EST". Even the correct spelling - NIL SEPARATUM EST - is borderline meaningless, as it translates literally as "nothing is separated".
When the soldiers are singing as they make their way to the fort, the mouth movements are out of sync with the song being sung.