Carry On Sergeant is a 1958 comedy film starring William Hartnell, Bob Monkhouse and Eric Barker; it is the first in the series of Carry On films, with 31 entries. The film was based on a play The Bull Boys by R. F. Delderfield and was adapted into a script by Norman Hudis with John Antrobus contributing additional material. It was directed by Gerald Thomas and produced by Peter Rogers, a partnership which would last until 1978.