I was pretty suspicious as well, but I was able to trace it back to this story from Military Times which is a pretty respected outlet. Of course, the vet could just be lying, but also WW2 was an insane time and stuff like this really did happen. I have also read about how slave laborers in Nazi Germany would do other things to sabotage, like cutting wires in the planes they were building.
https://www.militarytimes.com/news/your-military/2023/12/28/all-we-can-do-for-you-now-how-czech-sabotage-saved-a-b-17-crew/
I was pretty suspicious as well, but I was able to trace it back to this story from Military Times which is a pretty respected outlet. Of course, the vet could just be lying, but also WW2 was an insane time and stuff like this really did happen. I have also read about how slave laborers in Nazi Germany would do other things to sabotage, like cutting wires in the planes they were building.