The purpose of this paper is to inform the medical profession of the present status of military field x-ray equipment and of the current concept of military roentgenology. Since the termination of World War II, many physicians, both civilian and military, have freely contributed suggestions, valuable time, and guidance to a recently completed development program. This communication will serve as a progress report to these workers and will show that many of their suggestions and recommendations have been incorporated in the new line of field units. Characteristics of the units, which make them suitable for military operations overseas, will be discussed, and the major items will be described and illustrated. History The difficulty of fully anticipating requirements in a military situation is well known. Since actual needs and future changes in concepts cannot be predicted, those engaged in planning must make decisions based on past experience and the best available technical and professional advice (1). At...