Continuity mistake: Throughout the movie the outside shots of the B 52 show a shadow on the ground. That shadow isn't of a B 52 jet bomber but that of a B 17 WWII prop. It isn't a B 29 either, for the cord of the B 29 wing is thinner than a B 17s; Also, the wings and fuselage are much longer.The most obvious clue is the shape of the B-17 vertical tail- it is unique to the B-17, and much different from that of the B-29.
Continuity mistake: Just before Ripper kills himself, the cigar's shadow across his face indicates bright lights at the back of his office, away from the windows. When Ripper and Mandrake are seen standing together, bright lights are coming from the other direction. The direction of the shadows alternates between the close-ups and the wide shots.
Continuity mistake: During Dr. Strangelove's last delivery in the war room the Russian ambassador is standing next to his wheelchair, looking straight and grim. Strangelove develops some rather macho ideas about the ratio of women and men in the mine shafts after, and the ambassador turns to him and says with a smile, "You have an astonishingly good idea." but when the camera angle changes he is looking as straight and grim as before.
Factual error: When Major Kong is riding the bomb down like a horse, there is absolutely no wind whatsoever. Not only do we not hear it, but we can also not see any wind effects on Major Kong, as he can be heard to yell and holler quite clearly, and he is waving his hat like there is no danger of it blowing out of his hand.
Factual error: In the scene outside the where they U.S. Army soldiers are attacking the Generals headquarters, you see one American soldier firing at the headquarters building using a WWII era German Army MP40 Schmeisser submachine gun. Although not uncommon for American solders during WWII to use captured enemy weapons in a tight situation, it certainly would not be issued or allowed in the stateside peacetime early 1960's. Several soldiers are actually carrying and firing the U.S M3A1 "Grease Gun", but a few are doing the same with MP40s, presumably as a stand-in for the "Grease Gun".
Other mistake: When the radio operator opens the Aircraft Communications Codes book, he turns first to a 'L' page, but all the codes are 'F' codes including the key code. He then turns to a 'J' page and again the codes are the same 'F' codes. He then turns three 'E' pages, pages one and three are identical.
Add timeLarry Redfield
Character mistake: The so-called cobalt chlorium (.) G, which is supposed to be used in the Russian doomsday device, has, according to the Russian ambassador (and Dr. Strangelove), a half-life period of 93 years. He then states that it would contaminate Earth for 93 years. However, per definition half of the radioactivity would still be left after this period.