A joke from the '80s, I think, and not necessarily about a Polish soldier but could be:
A Pole is walking on the beach when he comes upon a bronze lamp sticking out of the sand. Naturally, he picks it up, he rubs it, and a genie appears.
"You know the drill," says the genie. " Three wishes. Let's go."
The Pole says "I want the Chinese to invade Poland."
The genie nods. "Okay, that's wish number one. Go on."
The Pole says "I want the Chinese to invade Poland."
"Didn't you already make that wish?" the genie asks.
"Yes, I did," the Pole answers. "I want it for my second wish as well."
"well, if that's want you want. And your third wish?"
"I want the Chinese to invade Poland."
"I don't usually question my clients," says the genie "but this is a pretty weird set of wishes. Why did you make those three identical wishes?"
"Simple," the Pole replies. "If the Chinese invade Poland three times they'll have to march through Russia six times."
LT