To be fair the Poles have a lot more to hold grudges about. We basically just fought our one direct neighbour and also ourselves for most of a millennium and then eventually our king inherited their throne. And then we kept fighting them and each other for another hundred and fifty years. There was a bit of a thing with Norway early on, and we invaded Ireland that one time, but we’ve been too out of the way of everyone else in Europe to get in that many fights*

Meanwhile the Poles are basically playing Doom: Eternal on horseback

* …until the British empire, of course, at which point we had teamed up with England and went on to fight literally everyone everywhere. I don’t think we can justifiably hold grudges over that, though, given that we started most of it by rocking up in boats and saying everything was ours