""The History of the Life of Leonard Torstenson"" is a biographical account of the Swedish military commander Leonard Torstenson, written by John Watts De Peyster and originally published in 1855. The book provides a comprehensive overview of Torstenson's life, from his early years as a soldier in the Thirty Years' War to his later campaigns as a general in the Swedish army. The narrative is based on extensive research and draws on primary sources,...