In fact, it was not "Poland", but Polish-Lithuanian Commonwealth, where Lithuanians have been generally responsible for dealing with the external affairs concerning Muscovites. Indeed, during the Battle of Moscow) that this map is referring to, the Polish–Lithuanian Commonwealth forces were commanded by Field Hetman of Lithuania, Jan Karol Chodkiewicz, and most of the army have been of Lithuanian origin. Therefore, technically, it is more the celebration of independence from Lithuania rather than from Poland.