"During the wars the Commonwealth lost approximately one third of its population as well as its status as a great power.[7] According to Professor Andrzej Rottermund, manager of the Royal Castle in Warsaw, the destruction of Poland in the deluge was more extensive than the destruction of the country in World War II. Rottermund claims that Swedish invaders robbed the Commonwealth of its most important riches, and most of the stolen items never returned to Poland."
From Wikipedia. https://en.wikipedia.org/wiki/Deluge_(history)
Yet, for destruction to rival that of the Second World War seems incredibly extensive. How valid is that comparison?
Follow up question: how good is the movie "The Deluge" at represeting those perilous times? It certainly is an entertaining epic.