[jrimbault]

It would make for a good Monty Python skit. A calm German officer behind a desk giving "escape receipt" to a giddy British soldier.

[vidarh]

Hogan's Heroes: https://en.wikipedia.org/wiki/Hogan%27s_Heroes

It'd fit well - they kept trying to escape, and it'd have been easy enough to have a plot where they talk the camp commander into giving them a "fake" receipt in return for a favour, only for them to actually escape (and of course get caught again).