Sergeant Holtz, the new Stalag 13 guard who gets shot is the only character killed on camera in the entire series.
Colonel Hogan (Bob Crane) and Hilda (Sigrid Valdis) have two romantic liaisons in the back seat of the Kommandant's car. On October 16 1970, 19 days after this episode aired, Sigrid Valdis and Bob Crane were married on the set of the show.
Awakening Klink (Werner Klemperer) from his sleep, Gestapo Major Stern (Edward Knight) is in Klink's bedroom when he informs him that he wants to arrest two men under Klink's command. The Heroes listen to their exchange on their coffee-pot speaker, showing that they have a permanent bug in a location other than Klink's office.
The pictures of the hotel shown are the same ones as in Gowns by Yvette (1970) - the Grindelwald Palace.
When Sergeant Schultz and Colonel Klink are in the office talking about whether the cabinet should be painted, there is a sign above Helga's head in German that means "Emergency Exit."