When in Paris, Corporal Langenscheidt was wearing on his sleeve one chevron pointed down with a star in the middle. In other episodes, he is wearing two chevrons pointed down. They are both markings for a corporal, but different corporal ranks.
Hermann Goring is referred to as "Field Marshal" . His rank was "Reichmarshall". This was a rank higher than Field Marshal in the Third Reich. Goring was the only man to hold this rank.
The artwork is a poster or print, not an actual painting.
When Schultz runs the Gestapo out of the apartment, he says on film 'Lucky for you I was completely drunk'. However, during editing, the line was dubbed to "Lucky for you I was loaded'. The change was made by CBS over concerns about the amount of teens watching the show.
After the copy of the painting is complete, LeBeau salutes and kisses Verlaine on the cheeks. Suzette repeats the process with Hogan, who then kisses Suzette on the lips. As the camera zooms in to get a close-up of the kiss, the shadow of the camera is visible on LeBeau's back.
When Hogan stopped the car to get Schultz to change into a general's uniform, Langenscheidt was nowhere to be seen. He did not give an objection. Since he was the one driving, he would have been the one Hogan told to stop the car. He should have seen what was going on, and voiced something.
LeBeau talks to the waiter in French, but then says 'Give this to the bosch general' in English.