A few interesting facts: Bill Millin was 21 when this happened, the actor playing him is considerably older than that. He was also wearing a kilt......
The actor playing the Airborne officer, Major John Howard, in that movie is Richard Todd, who actually took part in that action as an Airborne officer at Pegasus Bridge on D-Day.
The first allied soldier to die in action on D-Day was an officer in that British Airborne unit, Lt. Den Brotheridge, was from my own neck of the woods.
If you haven't read it, Stephen Ambrose's "Pegasus Bridge" is an outstanding account of that event and the weeks leading up to it. Highly recommended!