Character mistake: Early in the movie Cary Grant is on the beach and is told he has a phone call. While conversing with Bertani, Cary Grant has the handset backwards - he is speaking into the earpiece and listening to the mouthpiece where the chord is attached.
Character mistake: When Dutch is at the main gate to report for duty, he addresses an Airman as Sergeant. In the time period of this movie, an airman wearing three stripes would be an Airman 1st class.
Character mistake: After Cal goes to the secret lab in Georgia, he and two others go into his new lab. When they enter a cat jumps up on the counter. Dr. Adams says "This is Neutron. We named him that because he's so positive." Neutrons are neutral and electrons are negative. It's protons that are positive. They should have named the cat Proton.
Character mistake: Richard Thorp is Henry Maudslay, who got killed on the raid. However, at the end of the film, in the mess, he is patted on the shoulder by Stanley Baker. Big error.
Character mistake: Sarah after speaking to Sky when they come back from Havana and the thugs leave from playing the crap game she goes in the Mission she reaches for the light string to turn off the light she doesn't ever get the string in her hand but the light goes off.