This document provides an overview of how the US Army is organized and operates at the headquarters level (HQDA). It begins with the task, purpose and learning objectives of the briefing. It then outlines the agenda which includes discussions of Army history, leadership, organization, communications, politics and specific initiatives like the Energy Task Force. The document provides details on the various commands, directorates and secretariats that make up HQDA. It also explains key HQDA processes like the Planning, Programming, Budgeting and Execution (PPBE) process. In summary, the document is intended to familiarize attendees with the structure, functions and operations of the US Army headquarters.