Visible crew/equipment: While young Joan is lying in the field next to the sword, in the far right corner you can see a pair of legs and a camera lens pointed at the actress. (00:06:35)
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.
Aulon: But how do you know that these voices aren't just really you?
Joan of Arc: They are me. That's how God speaks to me. Even you could hear them if you listened hard enough.