Visible crew/equipment: Season 3, "Birthday Cake": When Littlejohn goes into the river, you can see the reflection of the entire camera crew.
Revealing mistake: Season 3, Episode 73, "Losers Cry Deal", a GI in The Squad fires a rifle grenade at a German machine gun position in a window of a building. Not only does the rifle grenade miss the mg position, it misses where the pyrotechnic representing the rifle grenade exploding was planted.
The Steeple - S3-E21
Other mistake: The Squad descend from The Steeple via the bell pull rope but the bell does not ring. (00:42:15)
Continuity mistake: When The Squad crosses the river the footage is cut footage from a previous episode, "Birthday Cake" - Littlejohn is holding his cake over his head. (00:05:15)
Continuity mistake: The war correspondent causes a disturbance. By the time the German guards enter the room, Saunders has the correspondent subdued with a knife he found. Each time the camera does a closeup of the knife Saunders is holding it in a different position. (00:36:10)
Visible crew/equipment: When the prisoners are looking for the dirt from the tunnel they discover it is in the attic. While they are removing a board from the ceiling they reveal an overhead stage light. You can tell this is a mistake because they hurriedly put the board back.
Factual error: The long shots show the supporting tank reversing, but the close up shot of the tank's drive sprocket shows the drive sprocket moving forward, thus the tank should be moving forward, not reversing.
Continuity mistake: The American soldiers lift out the bodies of the two German tankers and immediately start off in the German tank. They did not have time to hide/dispose of the bodies, yet when other German units show up shortly after, the bodies are missing.
Other mistake: When the German soldiers are on the radio alerting other German units of Americans in a captured German tank, they are using the English word "tank"- the Germans should be using the word "panzer", instead.
Revealing mistake: The grenade Saunders tosses onto the German tank does not land where the pyrotechnics explode.
Other mistake: When Saunders' tank and the other tank are sparring against each other, closeup shots of the tanks' rear drive sprockets show them moving in reverse, but overhead shots of the vehicles show the tanks moving forward.
Continuity mistake: During the opening scenes of the German attack, a shot of a B.A.R. gunner being shot is used three times.