than the battle which was waged against an equally formidable, equally treacherous, enemy by the men and women who wore on their sleeves the silver chevrons of home service. The Division of Tuberculosis is one of the four branches of the Division of Internal Medicine, it being the only division that has to do with a single disease. This is due to the fact that tuberculosis is admitted the world over to be the most prevalent disease known, one out of every seven of the earth’s inhabitants dying from some form of it. In order to detect the presence and combat the spread in the army of the Great White Plague, the Medical Corps very early in the war took steps to standardize the chest examinations of soldiers, all recruits being examined upon their arrival at the camps according to the standard thus devised by doctors who were specialists in tubercular troubles. These measures resulted in excluding from the army about 80,000 cases of active tuberculosis. Had the methods pursued in former wars been adhered to, a considerable proportion of these would undoubtedly have escaped detection, and, as tuberculosis is a highly communicable disease, thousands of perfectly healthy men would have become infected. Most of these tubercular cases would have had their disease aggravated by field service, and, moreover, the resources of the Medical Corps would have been heavily taxed had it been called upon to treat so large a number of patients. Soldiers who were suspected of having tuberculosis, or who developed it while in the service, were examined by specialists, who confirmed or rejected the original diagnosis, those who were found to have the disease being immediately sent to special hospitals or sanatoria for treatment. The location of these sanatoria in such recognized and widely scattered health resorts as Asheville, North Carolina, Denver, Colorado, the Catskill Mountains, Arizona, and New Mexico enabled the medical authorities to send the soldier patients to regions which, as experience has taught, promote recovery from the disease, and which were at the same time as close as possible to their homes. Patients sent to these hospitals were not discharged from the service until they were cured or until the maximum improvement had been obtained. Thus soldiers received treatment which few civilians could afford, no multimillionaire being able to purchase better medical attention than that which Uncle Sam gave his boys. As tuberculosis is a chronic disease, and as a certain number of cases will relapse after its progress has apparently been arrested, special efforts were made to teach the patients how to live in order to prevent further retrogression, particular emphasis also being laid on the necessity of observing the sanitary precautions which will prevent the transmission of the tubercular germs from the patient to the members of his family.