That shit happened to literally everyone in Europe at some point.
Remember that time when Napoleon occupied Spain, had thousands of Spaniards shot and laid waste to the country for years? Remember that time the same Spanish occupied the Netherlands and waged war against them for 80 years, wiping out whole cities?
Because the Poles are the only ones who bitch and kvetch about this kind of thing happening for all eternity.
What happened to them is absolutely standard, and every country in Euope has taken it gracefully on the chin without screeching over it forever.