Factual error: In the rec hall where Klink is weightlifting, there is an advertisement poster for the Grindelwald region on the wall, which is in Switzerland. The German propaganda poured a lot of money into promoting the Reich's own recreational regions through the "Kraft durch Freude" program. With the war going badly, they especially wouldn't want a "Look how beautiful Switzerland is" poster in plain view of their troops every day.
Revealing mistake: When Schultz checks the barbed wire to see if it is fixed now, he noticeably wiggles the vertical wire, but only barely touches the horizontal one - because it is rigged to come apart, and will again if he handles it too roughly.
Factual error: The ambulance Major Teppel transports the prisoners in is a Dodge WC54, which is an American military ambulance, not a German one.
Other mistake: As LeBeau is being interrogated, on the barometer behind Schultz you can make out the word "fair." What is a barometer labeled in English doing in a German counter-intelligence headquarters?
I Look Better in Basic Black - S1-E28
Other mistake: When Hogan asked the girls if they wanted to try to escape to England, the one in "basic black" said that anything is better than being booked in a German prison camp for three years. How did she know when the war would be over?
Will the Blue Baron Strike Again? - S4-E12
Factual error: The "Blue Baron" tells the dancer that the Kaiser gave him a certain medal. In fact, the medal he points to (and the girl fondles) is a WW2 repeat badge to the Iron Cross first class, instituted in 1939 to denote presentations of the Iron Cross first class to personnel who had already received it in WW1. He may have received the original Iron Cross from the Kaiser, but by the time he had a chance to receive that repeat badge, the Kaiser was long through handing out medals. (00:15:10)
Axis Annie - S3-E23
Continuity mistake: As Newkirk is talking to Axis Annie, his arms are crossed. They are uncrossed a second later without moving.
Continuity mistake: When Klink sits down with Marlene, her hands alternate between being on his face to behind his neck and back between shots.
The Return of Major Bonacelli - S4-E25
Revealing mistake: When Hogan, Carter and Le Beau are talking to Schultz, you can see it is an overcast day. After Hochstetter comes in and the camera cuts to them talking about Bonacelli, it goes back to Hogan. You can now see that they are on a sound stage. The reasons are that the guard isn't moving in The Tower, the boys are well lit, and as Hogan and Le Beau go into the barracks, you can see differences in the painting of the sky on the back drop.
Plot hole: In his German uniform, Col. Hogan wears a number of decorations, among them the Iron Cross first and second class. When did he earn those if he has just been drafted for a suicide mission? After all he was not posing as a Wehrmacht soldier for a change but wore the uniform "officially". (00:17:00)
LeBeau and the Little Old Lady - S3-E25
Audio problem: After Hogan and company get into the car to go to town to get Lebeau, Klink is walking around to get in the passenger side, Schultz takes off, leaving Klink standing alone. After Klink calls out, you hear the screeching of tires sliding on pavement. Trouble is, the camp doesn't have any pavement.
Sticky Wicket Newkirk - S3-E20
Revealing mistake: When Hochstetter goes to open the window in Klink's office after the explosion rocks the camp, look at the background. You can see the studio lighting shining on the matte painting of the camp yard.
The Flame Grows Higher - S1-E31
Visible crew/equipment: Toward the end of the episode, after the two women are taken out by the Gestapo, Shultz, Hogan, Lebeau, and Newkirk are standing having a drink. The camera goes in for a close-up on Shultz, there is a noticeable shadow of the camera on Shultz's coat, and right arm.
The Top Secret Top Coat - S2-E29
Continuity mistake: When Hogan and company are getting ready to listen to the sock from "Aunt Alice" they plug the coffee pot up to their recorder. As they do so, the light that indicates power is lit up, but then Lebeau plugs in the power cord.
Continuity mistake: After Shultz has been discredited, Klink is taking away the "badges of rank". When Klink goes to crush the monocle Shultz was wearing, he has his monocle on. After the shot cuts to a closeup of Shultz's monocle being crushed, and widens out, you see Klink's monocle is suddenly gone. It remains missing until Klink goes to the hat rack. The shot cuts from Klink, to Hogan and Shultz, then back, and the famous monocle is suddenly back, both without Klink stopping to take it off, or put it back on.
Continuity mistake: After the prisoners have loaded the truck, they stand around and the tailgate of the truck is down. Major Hochstetter arrives and we see the tailgate is raised. Next scene it is again in the lowered position. (00:17:40)
Factual error: In many episodes, SS members of all ranks appear - the most notorious recurring character being Major Hochstetter. Curiously enough, Hochstetter couldn't have been a Major in the SS, simply because that rank didn't exist there. The SS used the SA rank system, not the Wehrmacht one. Hochstetter for example would have to be a Sturmbannführer. Colonel Feldkamp would have to be a Standartenführer. To avoid confusion: Hochstetter sometimes claims he is Gestapo, even when he's wearing an SS uniform (different mistake). However, he couldn't be a major there either - he'd have to be a Kriminalrat or Kriminaldirektor, because the Gestapo, which was in principle a civilian police organisation and wasn't half as closely integrated with the SS or the military as the series would have us believe, didn't use military ranks at all.
Factual error: In many episodes, mainly the early episodes, some German guards carry Thompson submachine guns; an American weapon.
The 43rd, a Moving Story - S1-E23
Character mistake: When Klink explains the route of the trucks carrying the red cross packages to Kühn, he for once uses a map actually showing Germany. Unfortunately, the places he points to start near Luxemburg and track all across Germany. The spot he places Hammelburg at would be near Poznan in Poland.
Klink for the Defense - S6-E19
Factual error: About 8 minutes into show, Major Hochstetter asks Schultz how long Colonel Hogan (an American) has been running the camp, and Schultz says 3 years last November. This is impossible. The US didn't get into the war until December, 1941, He would have to have been captured November '42 or earlier but the war was over by November 1945.
Suggested correction: Not necessarily. Quite a few Americans served with the RAF before America declared war. The Eagle Squadron American volunteers fought at the Battle of Britain in 1940 for example.
