In war times the Germans would suspect that English spies had entered their camp and were leaking information. They would use a trick to expose the intruder. The suspect would be manoeuvred into a situation where their finger got jammed in the door. In that excruciating pain they would shout to the heavens... but in their mother tongue! Their real affiliations became immediately apparent.
Tolerate provocation
Tolerate provocation
Tolerate provocation
In war times the Germans would suspect that English spies had entered their camp and were leaking information. They would use a trick to expose the intruder. The suspect would be manoeuvred into a situation where their finger got jammed in the door. In that excruciating pain they would shout to the heavens... but in their mother tongue! Their real affiliations became immediately apparent.