William Hartnell was rather like his character off screen, and could regularly be heard barking at actors who fluffed their lines. Indeed, a visiting brigadier was highly complementary to Hartnell's drilling technique.
The first film in the "Carry on..." series. A further thirty were produced until 1992.
Whilst everyone's back was turned, Kenneth Williams smeared the rope used in the assault course with butter. This lead to much exasperation from Bob Monkhouse.
In this first in the "Carry on..." series, Kenneth Williams, Charles Hawtrey, Hattie Jacques, Kenneth Connor and Terry Scott would go on to be regulars in the series.
"Carry on, Sergeant" is a normal expression for an Army officer to use; the American equivalent is, "As you were." The title was used to cash in on the popularity of The Ship Was Loaded (1957), which was written by Val Guest. At the time, the success of the film prompted applause and audience laughter in serious settings where the phrase was used, including amongst audiences of the film The Devil's Disciple (1959).