Factual error: Why is Hilts not wearing a uniform? A serving officer captured behind enemy lines in civilian clothing risked being shot as a spy. If a prisoner's uniform was too worn or damaged to wear, it was routine for the German authorities to replace it - a P.O.W. in civilian clothes is an obvious escape risk. He is wearing a pair of tan chinos and a cut off sloppy Joe sweatshirt, both ridiculously anachronistic - Sixties hipster fashions - and nowhere even close to a World War 2 uniform.
Continuity mistake: The train is stopped because Spectre has pushed a 1950's style Dodge truck full of flowers in the trains path. Later, when James is driving it trying to avoid the grenades dropped from a helicopter, the truck has turned into a very different looking 1961 Chevrolet truck.
Continuity mistake: In the wide-angle shots of the blue Willys (Jeep) wagon, the windshield is a 2-piece version with a vertical divider in the middle. The close-up shots don't have the divider.
Continuity mistake: When they arrive on the island of Talos, the bronze giant, Hercules and Hylus find the statues atop huge plinths. In close up, they are looking up at the statue of Talos, then in a wide shot they start to walk towards it across bare rocks, then in close up they are back where they were with plants behind them.
Factual error: Luki shows up late at night to retrieve his baseball cap from the house where Amelia is staying. He explains that the hat is very important to him because it was signed and given to him personally by Stan Musial. Stan Musial played his whole career for the Cardinals, but the cap is a Boston Red Sox cap.
Suggested correction: The cap shown in the movie is absolutely a St. Louis Cardinals cap, not a Boston Red Sox cap.
Suggested correction: The character of Hilts was based (in part) on the life of a British OSS agent who managed to pass as pilot by stealing a flight jacket (revealed in the DVD). We can only assume that since the Germans believed the camp was escape-proof, it didn't matter what Hilts was wearing, since he wouldn't be going anywhere.
Cobblers. Hilts is wearing casual clothing typical of the time the film was shot, not when it was set. No prisoner of war would be dressed the way he was. The posting is correct.