Knowledge management has long been a staple activity of the United States Army. While there is a tendency to describe the US Army's knowledge management activities as a phenomenon made possible by technology, in fact knowledge management in the US Army is as old as the US Army itself. Drawing on secondary sources and personal experiences, the goal of this paper is to discuss the US Army knowledge management from the perspective of the US Army's organizational structure. We postulate that much can be learnt from how the US Army organizes for effective and efficient knowledge management. Copyright © 2003 John Wiley & Sons, Ltd.