Factual error: When the bombs are being taken down the lane, in the background where the lane meets the road a white mini can be seen passing the entrance.
Factual error: When the B-52 is flying low over Russia, the shadow on the ground is a Boeing B-17G, a World War II propeller driven bomber.
Factual error: In the climactic charge scenes in which the three ranks of British soldiers deliver volley after volley into the Zulu masses, the soldiers closest to the camera are correctly equipped with lever action Martini-Henry rifles but those further back in the line can be seen pulling up and back on bolt action rifles, wrong for the era.
Factual error: In the Ascot racing scene, the actors' heads move from their left to right when the horses come to the winning line. From the stands at Ascot, the horses run clockwise around the track and would enter from right to left.
Factual error: Charlotte tells the sheriff that when her cousin Miriam arrives, she will know how to handle the County Commissioner. Louisiana doesn't have counties. They have parishes. (00:25:25)
Factual error: When the pursuing fighter jets are supposed to start their engine afterburners, we instead see a short clip of them firing their air-to-air missiles.
Factual error: The movie shows a 'jet' aircraft belonging to 'consolidated airlines'. The so called airplane is a laugh. It has two jet engines attached to the horizontal stabilizers. The landing gear appear to be bolted to the wings. During the movie this plane crashes and the engines are moved to a terminal to be examined. They are too small to be real engines. During the course of examining the engines, they are run inside the terminal building. One of the investigators stands 10 feet behind the jet intake and is not sucked inside. The cockpit is not even close to what one would find in a jet airplane.
Factual error: This movie tries as best it can to convince the viewer the action is happening in the states even though it was shot in Italy. (1) during a news report, the term 'his excellency the governor' is used which is used nowhere in the states. The rest of the newscast is equally odd. (2) the architecture is definitely 1950s Italy. (3) there is almost a complete lack of American automobiles; most of them are Fiats. (4) you can see Lebanese cedar trees everywhere trimmed in the Mediterranean style (tall and skinny). There are many more too numerous to go into.
Factual error: In reality, Commodus did not die in the arena - he was strangled in his apartments in 192 A.D. by an athlete who was hired by a group of Senators conspiring against him.
Factual error: At the start of the excommunication scene, the monks are chanting Dies Irae, a thirteenth century Catholic poem, but St. Thomas Becket died in 1170, almost a century before the poem was written.