Between the 12th and 15th centuries, crusading armies unleashed a relentless holy war against the last pagan societies in northern Europe, particularly in the Baltic Sea region. Led by Catholic rulers, churchmen, and, most importantly of all, the warrior monks of the Teutonic Order, they sought to expand Christendom through conquest and conversion. In the process they forged a new world with a profound legacy that resonates into the present. Pluskowski traces the broader story of the Baltic Crusades. He explores how the construction of castles and towns, and the introduction of new languages, technology, monetary economies, and religion transformed the conquered societies. We see how the history of the crusades was reinvented in the 20th century to serve nationalist aims, including those of the Third Reich. This is a fascinating study that provides a fresh look at the impact of centuries of religious warfare across northern Europe.