The statue that Marcus glances at at the fort before the first Celt attack is a bust of Antoninus Pius, who was emperor of Rome at the time this film is set, AD 140. His reign is considered one of the calmest in Rome's history. See more

Goofs

Nearly all Roman soldiers are shown wearing crude leather vambraces. While the Roman army of that era indeed had a complex arm guard known as the manica, these were not standard issue, composed of metal plates, and considerably more sophisticated than the fairly basic pieces of equipment worn here. Furthermore, although vambraces similar to the ones from the movie were used in later Roman armies and by the Byzantines, there is no evidence to suggest that they were already in use in the 2nd century. See more