I remember seeing ‘Very Important Person’ but it was years ago.
I looked it up and was surprised that the method of escape in the film was to impersonate the members of an inspection party from the Swiss Red Cross and to ‘simply’ walk out while the real Red Cross were still in the camp.
This (of course) was actually tried for real by POW’s during the war.
WA$.
POWs also tried to walk out dressed as guards: as these two did. Scene is Stalag Luft 1, January 15, 1942. Man at far left was Sqdn Ldr Dudley Craig, former CO of 607 Sqdn, man second from right was Sqdn Ldr W.H.N. (Willie) Turner, former (B) Flight Commander 51 Squadron, other two were real thing. They were caught at the gate.
Best Wishes.
Robert.