Other mistake: Towards the beginning of the movie, Castelgard is misspelled "Castlegard" on the lab's computer screen when Doniger is first explaining everything to the soon-to-be time-travelling team.
Timeline (2003)
1 other mistake - chronological order
Directed by: Richard Donner
Starring: Gerard Butler, David Thewlis, Paul Walker, Billy Connolly, Anna Friel, Frances O'Connor
Factual error: Both the English and French armies are wearing uniforms (English red and the French blue). An army would not have had a uniform at this time - each knight would have his own standard and colours - these colours would also have been worn by his squires. The peasants (bowmen) would wear their own clothes - usually a brown or other earth tone, and definitely not a red/blue tabard.
Marek: I just delivered her to the French for safekeeping. How did the English get her?
Professor Johnston: It's history.
Marek: Then history will change.
Trivia: Although the movie was almost a completely different story than the book, they did make reference to a scene in the book: when you see the guy in the beginning in the hospital, he has blood all over his face. The reason is because right before then he was talking about Quantum Foam and then went into convulsions, then started spewing up blood...gory, but a nice add in to let us know that the writers actually read the book.
Question: Why is it that they aren't allowed to bring any modern weapons into the past? The grenade didn't seem to be affected. A simple air gun with tranquilizer darts would be enough just for protection.
Answer: Because you can never know what kind of influence the discovery of such a thing by the local people would have on any of those involved. The grenade was not supposed to get sent back, but since it exploded, not enough pieces are left for local people to wonder about them if ever they find some. That would not be the case for a full weapon.
Sereenie