Kings and Generals animated historical documentary series on the Thirty Years' War covered the most crucial battles of the conflict - White Mountain, Breitenfeld, Lützen, Rocroi, Nordlingen and others, but this war was also known for the higher civilian casualties than the previous ones. In this video, we will talk about why the Thirty Years' War was so devastating, even in comparison to other European Wars of Religion, and how it killed millions of people.