Army doctrine reference publication (ADRP) 5-0 augments the principles of the operations process found in Army doctrine publication (ADP) 5-0, The Operations Process. It provides an expanded discussion of planning, preparing, executing, and assessing operations. Together with ADP 5-0, this ADRP establishes a common frame of reference and language that commanders and staffs use for the exercise of mission command. To comprehend the doctrine contained in ADRP 5-0, readers must first understand the foundations of unified land operations described in ADP 3-0, Unified Land Operations. In addition, readers must fully understand the principles of mission command described in ADP 6-0, Mission Command. For a detailed explanation of the tactics, techniques, and procedures associated with the operations process, see Army Tactics, Techniques, and Procedures (ATTP) 5-0.1, Commander and Staff Officer Guide. The principal audience for ADRP 5-0 includes Army commanders, leaders, and unit staffs (officers, noncommissioned officers, and Soldiers). Commanders and staffs of Army headquarters serving as joint task force or multinational headquarters should also refer to applicable joint or multinational doctrine concerning the range of military operations as well as joint or multinational forces. Trainers and educators throughout the Army will also use this manual. Commanders, staffs, and subordinates ensure their decisions and actions comply with applicable 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 5-0 uses joint terms where applicable. Selected joint and Army terms and definitions appear in both the glossary and the text. Terms for which ADRP 5-0 is the proponent publication (the authority) are marked with an asterisk (*) in the glossary. Definitions for which ADRP 5-0 is the proponent publication are in boldfaced text. These terms and their definitions will be in the next revision of FM 1-02. For other definitions shown in the text, the term is italicized and the number of the proponent publication follows the definition. ADRP 5-0 applies to the Active Army, the Army National Guard/Army National Guard of the United States, and the United States Army Reserve unless otherwise stated.