The Second Seminole War, also known as the Florida War, lasted for over six and a half years between 1835 and 1842. Historians have described this as "the longest and most costly of the Indian conflicts of the United States." But why did the conflict begin? What happened during this war? And how did it end? John T. Sprague, who served as a lieutenant through the course of this war, provides a fascinating account of this much-forgotten conflict. He provides insight not just as an eyewitness but also gives a thorough overview of the war that raged between Seminoles and American troops. The Origin, Progress, and Conclusion of the Florida War is an essential book for anyone interested in American and Native American relations as well as those who wish to learn more about this largely-forgotten conflict that flared up during the Antebellum period. “an indispensable source.” Texas State Historical Association John T. Sprague was a soldier who fought with both the United States Marines and Infantry through the course of his career. He was promoted to first lieutenant on May 1, 1839, and was sent to Florida as an aide to brevet Maj. Gen. Alexander Macomb, who had been charged with bringing the interminable Second Seminole War to an end. His account of that conflict, The Origin, Progress, and Conclusion of the Florida War was first published in 1848 and he passed away in 1878.