Er no offence intended Conrad, but I would have thought: "Polish won the war......" was a dodgy statement. As I read it, they got invaded by two different countries, were still occuppied at the end of the war and were not effectively liberated until 1989. I am very much on the side of Polish people too, but you seem to have an interesting slant on history!
Two lovely songs - One in Yiddish
                   One in German