This was the third episode in a row (in production order) that Larry Hovis did not appear. He would appear in the next filmed episode "The Swing Shift" which CBS had already broadcast.
A pack of Benson & Hedges 100's is superimposed over much of the closing credits, though it does not appear in the DVD version.
There is no audience laughter present in this episode.
There is an obvious sound edit as Newkirk praises his skill after cracking Klink's safe combination.
Carter impersonates Herr Schmidt of the Gestapo.
The prisoners "play" a knitted sock in a fake sewing machine to decode a secret message from London.
No audience laughter is present in this episode.
Carla is played by Angela Dorian, whose real name is Victoria Vetri. She was Playboy Magazine's Playmate of the Month for September 1967, and later Playmate of the Year for 1968.
A pack of Benson and Hedges cigarettes is superimposed over some of the closing credits.
Newkirk, (Richard Dawson), does not appear in this episode. Olsen (Stewart Moss), fills in during this episode and a handful of others. It is likely due to his resemblance to Hogan and other skills, making him a valued 6th man, yet he's just not made a series regular.
The episode opens with an uncommon shot of the London skyline and the word "LONDON" superimposed upon it.
Goof: Major Hochstetter says that Hammelburg (near Stalag 13) has been chosen because of its proximity to Düsseldorf, but his geography is way off -- Hammelburg is 250KM from Düsseldorf.
Schultz is unusually womanizing here, while he's generally quite supportive of his family, arguing that he has a wife & 5 kids to support, and that they eat a lot!
Captain Roberts' double is noticeably taller than Roberts himself.
Hogan uses a broken coat hanger and a pair of LeBeau's gloves to create a makeshift set of noise-cancelling headphones for Schultz.
Larry Hovis' hands are uncommonly ungloved during the vest testing scene. His left bears a real-life wedding ring which he refused to remove during filming. (This is why Carter nearly always wore black gloves.)
The POWs walk by two buildings in the compound, one labeled "Barracke" in German and the other "Recreation Hall" in English.
Klink's open office door reveals a male assistant sitting in the outer office.
The title of this episode is a play on the movie title "Night of the Generals" (1967) starring Peter O' Toole and Omar Sharif. The movie involved a plot to kill Adolf Hitler in 1944.
Just after the opening credits, the shot of the front gate of came was of a winter scene instead of the usual one.