The principal audience for Army doctrine reference publication (ADRP) 3-09 is commanders, leaders, and staff of the fires warfighting function. Commanders and staff who must employ fires within their operations should also use this doctrinal manual. This ADRP is not only based on the Army's capstone doctrine, Army doctrine publication (ADP) 3-0 and ADRP 3-0, but is also grounded in joint doctrine such as found in Joint Publication (JP) 3-0, JP 3-01, JP 3-09, and JP 3-60. Trainers and educators throughout the Army will also use this manual. The scope of this publication is broad in its focus in order to deal with fires as a complete entity. It gives equal treatment to the diverse assets that are designated as fires resources. The successful employment of fires depends on the integration and synchronization of all forms of fires within all the warfighting functions. This manual forms the foundation for training and Army education curricula on fires. This publication describes the fires warfighting function in terms of its major components, functions, and required products, and describes how fires are employed in terms of the operations process. Commanders, staffs, and subordinates ensure their decisions and actions comply with applicable United States (U.S.), international, and, in some cases, host-nation laws and regulations. Commanders at all levels ensure their Soldiers operate in accordance with the law of war and the rules of engagement. (See field manual FM] 27-10.) ADRP 3-09 uses joint terms where applicable. Selected joint and Army terms and definitions appear in the glossary and the text. Terms for which ADRP 3-09 is the proponent publication (the authority) are marked with an asterisk (*) in the glossary. Definitions for which ADRP 3-09 is the proponent publication are boldfaced in the text. For other definitions shown in the text, the term is italicized and the number of the proponent publication follows the definition. ADRP 3-09 applies to the Active Army, Army National Guard/Army National Guard of the United States, and U.S. Army Reserve unless otherwise stated. The proponent for this publication is the United States Army Fires Center of Excellence. The preparing agency is the United States Army Fires Center of Excellence and Fort Sill.