Klink, somewhat ruefully: "I shall never forget what you gave me, my dueling scar." General Stofle, with genuine pleasure: "Ah, it was my pleasure." From the late 1800s through WW1, Austrian and German aristocratic society placed high value on dueling scars (schmisse) for university boys. Joining a dueling/fencing club and bravely getting a facial scar was deemed proof of a young man's courage, honor, and suitability as an aristocrat. High class women would never marry a man who lacked a schmisse. The Nazi party banned dueling clubs in the 1930s.
When Hogan and Klink are in the office discussing Zolle, Hogan picks up the Geiger counter from the desk. Not a German-made instrument, it is actually a Detectron model DG-2, manufactured in North Hollywood, just minutes away from the "Forty Acres" lot where the outdoor sets for Stalag 13 were located.
Sgt. Schultz says he weighs 295 pounds.
The brick steps built by our heroes in the previous episode are gone, replaced with the original wood steps. Never to be seen again.
When Hogan is informing London about the General's location, it is very obvious that Richard Dawson is the voice from London.