Trivia: When Klink is begging Hogan to trade places with him for fear of assassination, he says to him something like."I want to live til 80...all my family has lived til 80." Werner Klemperer, who played Klink, passed away in 2000 aged 80.
Praise the Fuhrer and Pass the Ammunition - S2-E19
Trivia: As Newkirk does his impressions, he says "Sprechen Sie Deutsch?, Ja! Then droppen sie dead." This joke was used in "Stalag 17", the 1953 movie about POWs in a German prison camp. The exchange was between Harry Shapiro and their guard, Johann Sebastian Schultz.
Reverend Kommandant Klink - S2-E25
Trivia: In this episode, Major Wolfgang Hochstetter makes his appearance. He is portrayed by Howard Caine, who played two other characters before this, one as a anti-aircraft battery commander, and another as a special investigator for the SS.
Trivia: Hans Speer, the factory owner, was played by Hal Smith, who fans of old television shows would know better as Otis, the lovable town drunk from Mayberry, on the Andy Griffith Show.
Answer: Nimrod's actual identity was never revealed in the series. It was only known that he was a British intelligence agent. Nimrod was not Colonel Klink. Hogan had only implied it was him as a ruse to get Klink returned as camp commandant, not wanting him replaced by someone more competent who would impede the Heroes war activities. The term "nimrod" is also slang for a nerdy, doofus type of person, though it's unclear why that was his code name.
raywest ★
"Nimrod" is originally a king and hero mentioned in the Tanach and taken into the Bible and the Koran. His name is often used in the sense of "stalker," "hunter," and sometimes figuratively as "womanizer" as in "hunter of women." I've never seen it used to denote a nerdy person, and although I cannot disprove that connotation, I think given his role, the traditional meaning is more likely the intended one.
Doc ★
It's widespread enough that Wikipedia has an entire section on it: https://en.wikipedia.org/wiki/Nimrod#In_popular_culture