The Lion of the North, A Tale of the Times of Gustavus Adolphus

Historical novel set during the Thirty Years War. According to the Preface: "You are nowadays called upon to acquire so great a mass of learning and information in the period of life between the ages of twelve and eighteen that it is not surprising that but little time can be spared for the study of the history of foreign nations. Most lads are, therefore, lamentably ignorant of the leading events...