At the beginning of the film, explanatory text indicating the year 1420 accompanies a map of Europe displaying the two combatants, England and France, but neither is shown correctly. The whole island of Great Britain is labeled England, even though Scotland remained a separate country until 1707, while France is shown with borders it would not attain until 1766. In fact, Scotland fought with France against England and Burgundy in the Hundred Years' War.
At the beginning of the film when Joan is lying by the river to the right of the screen you can see someone's pants and then a camera.
As Joan is introduced to Lord Dunois, a modern deerstand is seen in a nearby grove.
When Joan is riding her horse up to the castle to meet with Charles VII for the first time, an enormous shadow of the craning cameraman can be seen.
Joan is shot by an arrow near her right collarbone. In the last scenes(when she is about to be burned at the stake) the scar is on her left collarbone
When the English first see the army arrive on the far side of the river at Orleans just after Joan's first victory, you can see car tracks in the dirt of the shore.
At the Joan's sister funeral mother puts her hand on Joan's shoulder. We clearly can see her perfectly manicured nails, which is highly unlikely for a peasant woman in XV century.
Several crucial errors in the coronation scene:
1) The shape of the bishops' mitres are too-narrow and tall for the 15th Century France, and are more proper for 16th century Italy.
2) All coronation ceremonies of the time (which still survive in the Roman service books) specify that the monarch-to-be-crowned is vested in a white alb which covers the coronation outfit. The Dauphin is still dressed in his ermine.
3) The bishop attending continue to wear their mitres during the anointing. The ritual prescribes that the bishop remove his mitre before the anointing.
4) The bishop performing the anointing wears his gloves. The ritual prescribes that the bishop remove his gloves before the anointing.
5) The bishop officiating the coronation holds the ampulla (phial) of oil and shakes it. The correct procedure is for the bishop to remove his gloves, dip the front fleshy part of his right thumb in the Blessed Oil (Oil of the Catechumens), and anoint (rub in the form of a cross) both the palms of the monarch's hands, on the chest, between the shoulders, and on the crown of the head.
6) The coronation ceremony itself has been severely-shortened; in real life, it would have taken up most of the film's running time.
7) The bishop officiating at the coronation has a Rosary in his left hand throughout. A Bishop is not supposed to wear a Rosary during any service.
In one fight, a man cuts off another's arm. He hits him in the forearm with the sword but you can clearly see the arm come off much higher towards the shoulder. Also, you can see a splatter of blood for a moment on the lower left of the screen where it hit the camera lens.
The English captain clearly does not bring his armour when he escapes the Touirelles by jumping into the river. He was wearing the same armour earlier in the film, as he does on the battle field later on, after the battle of the Touirelles.
When the siege tower falls on the gate to the castle, everybody behind the gate door runs away. But on the next clip, there are a lot of people stuffed in under the falling gate.
When Joan meets Dauphin Charles for the first time she holds her arms around him shifting from just above his waist to around his hips.