[StainlessSteelCynic]

On a further note, while Sweden once laid claim to land in Poland, the Ukraine, Estonia, Latvia, Germany (as Prussia and the Holy Roman Empire) and Russia during the days of empire, one of their staunchest allies at the time was... France.

The French association with Poland is obviously a little closer in time to the present day than the Swedish ownership of Poland so it's probably a lot more relevant to many Poles than any claim that Sweden once exercised. Poland regards Napoleon I as a hero of nationhood and their national anthem specifically mentions him and French efforts in Poland contributed to the Polish national myth.

There could be some very convoluted loyalties at play in the scenario you fellows have in mind; France & Sweden, Sweden & Poland, Poland & France. Although it obviously needs to consider just how far back in time some people are prepared to go in regards to their friendship & loyalty to rulers and/or allies from days long past.

As an aside, Polish lancers of the Napoleonic period became the model for many laterday light cavalry units and one particular item that is still in use today, albeit cermonial, makes direct connection to that heritage. The lance with its pennant, the colours of which, red & white, are immediately recognizable as the same colours as the Polish national flag.