Corrected entry: The doctor in the ambulance tells Jim Brown, "You're wearing Air Force insignia." The name Air Force was not used until 1947, just after WWII. It was called (Army) Air Corps during WWII. (01:32:55)
Corrected entry: Prior to the attack on the Chateau, one of the team climbs a telegraph pole to cut the phone lines. To support himself he uses a brown and yellow webbing belt of the type introduced to British telephone engineers in about 1968. During WW2 a leather belt would certainly have been used.
Correction: I just watched the movie and played this scene several times, including a single frame advance passage. I can assure you that the belt is not "a brown and yellow webbing belt." it is plain, light brown leather.
Corrected entry: Bizarrely, this film is partially based upon a real incident - the ending of which is somewhat different to that in this film. Twelve US soldiers on death row or serving long prison terms were selected to undertake a highly dangerous mission behind enemy lines in France in 1944. One of the US Army officers responsible for them was Ernest Hemingway, another was - of all people. - Russ "Supervixens" Meyer. All twelve were intensively trained and then transferred to a transit camp near Caen to be prepared for their final mission. As soon as they landed on French soil, all twelve deserted.
Correction: During WW2, Hemingway was a war correspondent for Collier's magazine, while Meyer was a combat cameraman. Neither would have been given any degree of responsibility for a special mission. However, despite rumours to the contrary, no such mission ever took place. It's believed that the Dirty Dozen was inspired by a group of elite commandoes from the 101st Airborne Division, who were nicknamed the Filthy Thirteen and who were trained to demolish targets behind enemy lines. However, while the group had a reputation for hard drinking and fighting, and some did possess criminal records, unlike their fictional counterparts, none of them were convicts.
Corrected entry: As the convicts are building their training camp, Posy is shown with blueprints and a clipboard on which he is writing something. Later, when Posy comes out from talking with the psychologist, it is firmly established that Posy is illiterate: "The captain thinks he can teach me letters." How can he be reading blueprints and lists?
Correction: That's not the point. Posey is functionally illiterate. There is no way he would be trusted with an important task like keeping track of designs and the progress of his team through written lists, which would inevitably demand skills he simply did not possess.
Correction: Being illiterate wouldn't keep you from reading a diagram or drawing like blueprints. Posy could have been putting markings on the blueprints, not actually writing words.
Corrected entry: Towards the end of the movie where American soldiers were trying to remove the tops of the air vents, a German sniper has his cross-hairs on a soldier's forehead. When the sniper shoots, the next view is of the American putting his hands up to his face. The American was shot in the forehead which would negate any conscious after the fact movements on his part.
Correction: Not necessarily so. There have been many documented cases of people being shot in all parts of the head (some more than once) who retain consciousness and control over their actions/movements.
Corrected entry: In the airplane before jumping, Major Reisman is asked, "How much longer?" He gets up to ask the pilot and he is not wearing a parachute, although everyone else is already suited up. They jump from the plane seconds later. (01:45:00)
Correction: And we never see the Major talking to the "driver." When the pilot gives the ready light, it's the next scene, and we don't know how much time has past, not a continuous shot. We also see only half jump and then seconds later they're all on the ground talking. They simply skipped showing the Major gearing up before the jump.
Corrected entry: When Donald Sutherland is pretending to be an incognito General inspecting the troops (as the camera pans down the lines of solders to inspect) a helicopter can be seen clearly in the distance over the soldier's heads. While helicopters were air tested during WWII, it is highly unlikely to see one in service.
Correction: There is no helicopter in the scene at the Air Force base; it's a light plane. It is steeply banking so the wings aren't clearly visible, and the shape of the fuselage makes it look like a helicopter. It's too ar away to tell what type it is but it could easily be a WW2 vintage.
Correction: It isn't "air force" it is "Red Force", as in the arm bands they were wearing which showed which side of the exercise they were on.