Continuity mistake: When Joan first meets with her captains in Orleans, they argue. She walks away and La Hire calls her "a helluva woman". As she walks away, you can see him looking at her. Immediately, she turns back, and he is now looking at the other captains as she walks up to him and belts him. He must have turned his head very quickly, too quickly to be caught on film.
Factual error: In a scene in a bar the music playing is Blur's Song 2, which wasn't released until 1998 and a Kula Shaker song which wasn't released until 1996, by which time Nick Leeson was firmly in prison.