Poland gained some territory from Germany, lost a lot more to the commies.France and Britain had a defense pact with Poland and did declare war on Germany last time,but they could not provide much to prevent the fall of Poland. When the dust settled years later Poland was a carved up country(in the north Lithuania, Estonia and Latvia were part of Poland back then...the rest I am not going to bother looking up,but it ended WW2 much smaller than it was).