Peter Butterworth beyond the camp grounds. He was subsequently sent to Stalag Luft III, near Sagan, the scene of "The Great Escape". Whilst at Stalag Luft III he met Talbot Rothwell, who later went on to write many of the Carry On films in which Butterworth was to star. Rothwell and Butterworth formed a duet and sang in the camp shows, where booing and catcalls covered the sounds of an escape tunnel being dug by other prisoners. Butterworth was one of the vaulters covering for the escapers during the escape portrayed by the book and film "The Wooden Horse". Butterworth later auditioned
Stalag Luft III to conceal the bulges from the sand, and were referred to as "penguins" because of their supposed resemblance. In sunny months, sand could be carried outside and scattered in blankets used for sun bathing; more than 200 were used to make an estimated 25,000 trips. The Germans were aware that something was going on but failed to discover any of the tunnels until much later. To break up an escape attempt, nineteen of the top suspects were transferred without warning to Stalag VIIIC. Of those, only six had been involved with tunnel construction. One of these, a Canadian called Wally