Book excerpt: In 1917, as the United States prepared for war in Europe, Army Surgeon General William C. Gorgas recognized the threat of Mycobacterium tuberculosis to American troops. What the Army needed was some "good tuberculosis men." Despite the efforts of the nations best "tuberculosis men," the disease would become a leading cause of World War I disability discharges and veterans benefits. The fact that tuberculosis patients often experienced cycles in which they recovered their health and then fell ill again challenged government officials to judge the degree to which a person was disabled and required government care and support. This book tracks the impact of tuberculosis on the US Army from the late 1890s, when it was a ubiquitous presence in society, to the 1960s when it became a curable and controllable disease.