The improvised hospital is an important link in the medical care program of civil defense. Even with maximal expansion of existing hospitals to two or three times their present capacities, they would be able to provide for only a fraction of the sick and injured after a large-scale disaster. A review of the considerations of location, designation, and floor plans for improvised hospitals might be helpful here to civil defense planning and operation. The important steps of staffing and developing routine management procedures for improvised hospitals must be done well in advance of the actual opening and operation of these institutions. Establishment of improvised hospitals and making provisions for procurement, storage, and replenishment of supplies consumed in active operation are essential steps in providing good medical care for the patients admitted to these hospitals. This report will present lists of suggested duties of physicians, dentists, veterinarians, pharmacists, nurses, nurses aides,