On Major Hoffmann's office wall, there's a picture of Rudolf Hess, Hitler's deputy up to 1941. After Hess flew to Scotland year on an abortive peace mission that was unauthorised by Hitler, he was denounced and became reviled by the Nazi regime, so it's highly unlikely that an SS commander would have Hess' photo on his office wall in 1944, when this story takes place.
When Doug is being brainwashed to have his identity changed, he is shown slides of himself obviously wide awake, lucid and dressed in a Nazi uniform. How could such pictures already exist, given that Doug was taken off for brainwashing soon after being captured and did not don the Nazi uniform until after the brainwashing was complete?
When Mirabeau gets out of the car to help Tony get a wounded Doug into the car, you can see actor Robert Carricart slip and slide off-camera to the right. In the next shot he is well to the right of the two as he helps them up.
Kleinemann: I'm a scientist. Don't expect any heroic gestures from me.
The preview of the opening scenes of this episode in "Night of the Long Knives" features additional footage not used in this episode, thus making it longer than the same sequence at the beginning of this episode.