This book attempts to present an organizational history of Military Intelligence in the United States Army from its beginnings to the present. It makes no pretense at discussing the operational aspects of intelligence in detail, partially due to the continuing need to safeguard intelligence sources and methods. Furthermore, the book focuses its attention on the Army and necessarily slights the complex interrelationships between Army intelligence and other organizations in the intelligence community. Finally, although the book includes the lineages and heraldic items of military intelligence brigades, groups, and battalions organized under tables of organization and equipment (TOEs), it does not cover the numerous intelligence units, past and present, organized for one-of-a-kind missions under tables of distribution and allowances (TDAs).