I think you forgot to try to back up the bit about how the US pays government workers. And the bit about tends of thousands of Polish soldiers too, come to thin

I think you forgot to try to back up the bit about how the US pays government workers. And the bit about tends of thousands of Polish soldiers too, come to think of it. And the bit you did try to back up... I googled for the first story I could thought I'd read about industry there when the war started. I found https://www.br.de/nachrichten/wirtschaft/fnord,SyvASJz https://www.br.de/nachrichten/wirtschaft/fnord,SyvASJz which is about the same thing (you'll probably need to use Google Translate) and you'll note that it says "west". Did I just have a stroke of luck to happen upon a story about what you say is the less indistrialised part of the country? It sort of makes your story sound less plausible when the first reality check is so implausible.