There is a poster on the wall next to the entrance door where in future episodes the picture of Hitler talking with the office bug microphone is usually located.
The pins in the notice change patterns between shots.
In the teaser for the episode, John Banner (Sgt. Schultz) reads a short speech that is supposed to go with the announcement he is posting to the bulletin board. Near the start of the speech, he lowers the sheet of paper he is reading from and says, "You don't want to hear this," as an aside to the prisoners, and then continues reading. After he flips the sheet over and continues, Banner's scripted aside can be seen in the text from which he is reading.
In the scene where Newkirk and Carter barge in on General Burkhalter, there are two shadows of Burkhalter on the wall behind him to the left, and shadows of a coat stand on the wall to the right, indicating several production lights.
There are several instances where production lights are reflecting in Klink's monocle. In one case, two lights are seen reflecting at the same time.
While wearing a German uniform, Carter, who is not married, is clearly wearing a wedding ring.