Prieto examines the operation led by General John Pershing to search for, capture, and destroy Francisco "Pancho" Villa and his revolutionary army in northern Mexico in the year prior to the United States' entry into World War I. This campaign marked one of the final times cavalry was used on a large scale, and it was one of the first to use trucks and airplanes in the field. While Pershing's troops failed to capture Villa, both Regular Army troops...