This reference material is the doctrinal guide for commanders, planners, and users of Army Public Affairs. It is also a guide for those who must consider the effects public affairs has on military operations. It describes the fundamental principles and concepts for providing information to a wide range of internal and external audiences, soldiers, family members, retirees, political leaders, the general public, allies and adversaries. Public affairs personnel must use their professional knowledge, skills and judgment in adapting the principles in this manual to their specific situations. Public Affairs commanders and trainers should use this manual to plan and conduct their training. Numerous terms, acronyms, and abbreviations are found in the manual. Users should refer to the glossary for their meanings or definitions.