Early in production planning, it was decided to make it always be winter, with snow on the ground, and frost on the windows. This was to prevent problems with continuity, and to allow the episodes to be shown in any order. Since much of the filming was done in the summer, the cast members had to wear coats and act cold, even when the temperature was over ninety degrees Fahrenheit (thirty-two degrees Celsius).
Col. Wilhelm Klink:
Colonel Hogan, I'm very busy this morning - dispatches from Berlin. What is it?
Col. Robert E. Hogan: I want to register a complaint on behalf of my men.
Col. Wilhelm Klink: Really? A complaint. Not sufficient entertainment, perhaps.
Col. Robert E. Hogan: No, you're funny enough.
In one scene taking place in a German laboratory, a periodic table of elements is hanging on a wall. It shows all the 103 elements known to science in the 1960s, but during the war, fewer than 92 elements were known: the rest were created by nuclear science, including several instrumental in the top-secret Manhattan Project.
German broadcasts of the show differ from the original. For example, because Nazi symbolism had been outlawed in Germany, any time the German officers gave the Hitler salute and shouted, "Heil Hitler!", the German version dubbed in another, more bizarre line such as, "This is how high the cornflowers grow." Also, anytime the show alluded to actual bombing and killing, the dialog there was modified as well. For instance, when the Americans destroyed a munitions factory, the German version made it a toilet paper factory. And when Sgt. Schulz reported the Allies having bombed Hamburg, it was revised to the Royal Air Force dropping planeloads of candy as a "propaganda maneuver."
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