The Thirty Years War
From Cormac's list on early modern European warfare.
The late, great C.V. Wegwood was one of the masters of narrative history who—like her contemporary Barbara Tuchman—became a legend for weaving a bounty of facts into a brilliant page-turner. In this classic, she takes on what is perhaps Europe’s most infamously complicated war and succeeds with characteristic genius. The Thirty Years War (1618-1648) was many things: the culmination of Europe’s religious wars, a struggle for the heart of a continent, a clash of empires, a collapse of civilization, and, perhaps most poignantly, a sprawling nightmare that still haunts the German people. Wedgwood covers it all in a crisp, witty narrative in which characters high and low virtually walk off the page. In English, this is probably still the reigning treatment of this bear of a subject, and it is a joy to read.