Factual error: About 20 minutes in, the group find a Welsh miners' group in the phone book. The character who is making the call speaks the first two digits of the phone number: "0, 1,..." The movie is set in 1984, when the dialling code for that district was "0639" In that year, "01" was the code for London, not Wales.
Continuity mistake: After Rita and Eddie's fridge is repossessed they are arguing outside their flat. On the wall outside their neighbours' flat there is a wheeled trolley or pushchair hanging on the wall. This disappears and then reappears several times during this sequence of the film.
Factual error: The telephone for the phone bank doesn't have a phone jack cord connected into the back of the telephone. (01:15:14)
Factual error: There is a running camera shot at the UN of national flags, the current Canadian flag is displayed but it was first introduced in 1965, the movie scene is suppose to take place in 1964.
Audio problem: On the beach, when Rodrigues asks when Inoue-sama will arrive, the Interpreter tells him that he is not coming. Rodrigues then says "He treats me kindly", but his lips do not move along with the speech. He just nods. (01:48:55)
Factual error: The narrator near the beginning says Al Capone was born in Italy. He was actually born in Brooklyn NY.
Continuity mistake: As Steve and Mike are leaving in the police car, Mike turns and puts his arm back as he looks back to start driving in reverse as Steve waves to his wife. It cuts to an angle from behind his wife as Steve puts his arm down, but then Mike turns and looks back again a second time in this shot to start backing up. (00:20:35)
Character mistake: Wilhelm Keitel was a field marshal, not an admiral as stated during the sentencing.
Continuity mistake: Before the ambush with the Indians, we see Buffalo Bill on a horse - only it's not him, but a stand-in. In the next shot we see Buffalo Bill closer up, and comparing the profile and facial structure of both shots, it's a different person on the horse to the actor that portrays Buffalo Bill. (Stand-ins were often used in older films when the actor was not available for filming for whatever reason.)
Revealing mistake: Back at his NAACP homebase, Marshall meets with the boss who is already sending him to deal with another case. In the close-up of the newspaper he's reading, check out between the actor's fingers. You can tell that half of the article, which begins in English, suddenly switches into Latin 'lorem ipsum' filler text. (00:06:20)
Visible crew/equipment: In the second episode as Geli takes out her bike, with a Hitler painting. You can than see a modern yellow jacket worn by the director an film crew standing in shot. All on the left of the car, before the camera pans into Geli for a close up. (00:13:50)
Continuity mistake: When Ahmed Alhaznawi (the tallest of the four terrorists) has just gotten through the metal detector, a pattern of light appears on the floor behind him between shots.
Factual error: During the film, there are extracts of two songs - 'The Spy' and 'Maggie McGill' - from the Doors' fifth album, Morrison Hotel. Great songs, however the film is set in 1968 and Morrison Hotel was not released until 1970.
Continuity mistake: At the beginning of the film when Georgiana is talking with her mother about her engagement, the curl running down the back of Georgiana's neck disappears and reappears multiple times.
Factual error: At a very early point in the film, the King says something along the lines of "....and these are your playmates". In the background is a horde of 17th century ladies boating on the Achille Duchenne water parterre at Blenheim Palace. The palace wasn't built until the late 18th century, and the parterre was not designed until 1925.
Factual error: During their transatlantic boat trip, on their way to Athens, the American athletes are having fun naming various foods from back home that they already miss. One of them claims he misses chocolate chip cookies. Oops. That particular cookie didn't exist until Ruth Wakefield invented it in 1930.
Factual error: The weapons for this film, save for the American Krag-Jorgensen rifles, British Lee-Enfield MLE rifles, and German Mauser Gewehr 98 rifles, are completely wrong. The Russians, who had Mosin-Nagants, are portrayed with Mausers. The French are for the most part correctly poratrayed with Lebel Mle. 1886/93 rifles, but a few have Berthier rifles that weren't used until 1907. The Austro-Hungarians are portrayed with a mixture of Mausers and Berthiers when they would have had Mannlicher M88/90's or perhaps Mannlicher M95's. The Japanese are equipped with Mausers and would in reality have had Muratas. The Italians have a mix of Berthiers and Mausers, but would've used Vetterli-Vitali rifles. The Chinese Imperial troops and Boxers both have Gewehr 98 Mausers. Although they did indeed have Mausers, they had the far earlier Gewehr 71's and Gewehr 71/84's.
Factual error: The attack on the OPEC meeting in Vienna takes place on December 21. Yet, when Carlos' team exits the tram, the trees are full with green summer leaves and the sun shines as it would on a high summer day.
Audio problem: The day after Operation Mardonius, when the first set of bombs explodes you first see the explosion and then hear it after a second, then as the last bombs explode you both see and hear the sound at the same time.
Factual error: In this scene several sailors attack Alice Paul and tear down the demonstrator's banners. The older sailor's petty officer rank specialty insignia featuring three lightning bolts, Radioman, was not created until 1921, four years after this incident. (01:30:35)