Reluctant Heroes (1951)
Reluctant Heroes is a 1951 British comedy filmed in Technicolor. It is based on the farce by Colin Morris. Directed by Jack Raymond, it stars Ronald Shiner as Sergeant Bell or as Sergeant Able. It was produced by Henry Halsted and Byron Film. The play, which had premiered at the Whitehall Theatre the previous year, was the first of the Brian Rix company's Whitehall farces.
More at Wikipedia.