Matusiak, John  
  
  
    Early seventeenth-century Europe was a dangerous place. The resulting Thirty Years' War was to claim more lives proportionately than either the First or Second World wars - not only from battle and the endemic violence of marauding armies
 but also from famine and plague. In the wake of events in far-off Bohemia in 1618
 there ensued a bitter struggle encompassing the entire political and religious futures of Europe
 and involving in one way or another all of the major players of the Continent - from the Habsburg monarchs of Spain and the Holy Roman Empire
 to the Bourbon rulers of France
 and the renowned King Gustavus Adolphus of Sweden
 as well as Denmark
 England and
more crucially still
 the emerging Dutch Republic of the United Provinces. As the turmoil unfolded
 vast mercenary armies exacted an incalculable toll upon helpless civilian populations
 while their commanders and the men who equipped them frequently grew rich on the profits
 leaving the rulers - to whom they sometimes bore no more than nominal allegiance - perched on the brink of catastrophe. When peace came
 in 1648
 the crisis appeared to have passed
 but the underlying causes were far from wholly resolved. On the contrary
 in some cases they were merely suspended or fashioned anew.