Book excerpt: The Great Sioux War pitted almost one-third of the U.S. Army against Lakota Sioux and Northern Cheyennes. By the time it ended, this war had played out on twenty-seven different battlefields, resulted in hundreds of casualties, cost millions of dollars, and transformed the landscape and the lives of survivors on both sides. In this compelling sourcebook, Paul Hedren uses extensive documentation to demonstrate that the American army adapted quickly to the challenges of fighting this unconventional war and was more effectively led and better equipped than is customarily believed.