Goofs

In the trial by combat, the falcon on Myles' shield has a ribbon tied around the top feather of its wing. When the shield was first given to Myles, the wing was unadorned.

During the final battle, Myles gets a number of scuff marks on his shield from deflecting his enemy's axe blows. These damage marks appear and disappear between shots.

During the final battle, one of Mackworth's squires pushes two of Alban's soldiers off a parapet onto the drawbridge. One man-at-arms falls into the moat, the other slashes the squire, who falls to the ground near the drawbridge winch. The squire cuts the rope, lowering the drawbridge, then faints by the wheel, as the other man-at-arms falls off the drawbridge into the moat. When a group of knights ride across the drawbridge, it's the man-at-arms who lies by the drawbridge winch instead of a Mackworth squire.

King Henry IV had a relatively short reign and only reigned between 1399 and 1413 so the events of this movie must have taken place within this time frame. Henry is shown here as an old man, when in reality, he was only 46 when he died, likewise his soon Prince Hal, (later King Henry V), was only 26 when he became King and not the 30+ man portrayed here.

The plot also centres around the fact that it was Henry IV who declared the Falworth Family traitors and with a reign of only 14 years and given the ages of Meg and Myles in the film, they would have certainly had knowledge of their father and their noble lives before he was wrongly declared outlaw and killed.

Mediaeval shields were not made of metal, but of wood covered in leather or parchment.

In the book of heraldry, the Falworth family motto, "Fidus et Audax" ("Faithful and Bold," in Latin) is misspelled "Fidus et Andax."

The squires would not be quartered in a barracks-style accommodation.

Castle walls would be built of stone blocks, and not smooth plaster or stucco.

When Myles fights with one of the trainers, some shields fall off a wall, but one shield jumps off the wall before anyone even gets close to it (around 53:23).

Exhaust fumes are clearly visible in front of Tony Curtis as he gallops towards the camera.

The game of croquet is being played during the reign of Henry IV. The earliest known reference to croquet being played in England was during the reign of Charles II some 2 centuries later having been imported from France.

The dresses worn by Lady Anne and Meg incorporate modern design features such as bras and bust shelves not found in Mediaeval gowns.

When the Earl of Mackworth reveals his plot to Myles, he says the lands that should have belonged to him and his sister were given to the Earl of Alban. According to English law of the day, only sons could inherit, unless there were none living. Lord Mackworth would never suggest that Meg could inherit the family's estate during Myles' lifetime.