In '39 September Poland was divided again. Soldiers and civilians en masse crossed our border and we helped them to flee and even allowed the Polish resistance to organize their army, despite German protests (although had to take some formalities as if we were doing something about it). Emigrants could set up civil institutions here, press, courts, schools, libraries, cultural events, all supported by the Hungarian state.
During the Warsaw Uprising a corp of ours - stationed in the neighbourhood - helped with food, ammunition and looked the other way when it came to Polish troop movements and flight.
After the German occupation the leading figures of the Polish emigration were arrested, some were executed at place, some ended in Mauthausen. During '44-45 were marched to Germany to forced labour. I think the Jews from Poland - some thousands arrived - were transported to Auschwitz.
After the war most returned to Poland, but some settled at us.