This doctrine manual, Army Doctrine Reference Publication ADRP 3-0 Operational October 2017, supports land operations doctrine established in ADP 3-0, Operations, and is supported by FM 3-0, Operations. This publication expands the overarching guidance on unified land operations. It accounts for the uncertainty of operations and recognizes that a military operation is a human undertaking. It constitutes the Army's view of how to conduct prompt and sustained operations on land and sets the foundation for developing other principles, tactics, techniques, and procedures detailed in subordinate doctrine publications. The principal audience for ADRP 3-0 is all members of the profession of arms. 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 and joint or multinational forces. Trainers and educators throughout the Army will use this publication as well. ADRP 3-0 contains numerous changes to the November 2016 version, the most significant of which are updates necessary to align with FM 3-0, Operations. ADRP 3-0 modifies the definition of unified land operations to account for the consolidation of gains. ADRP 3-0 adds the concept of a consolidation area to the operational framework. Additional changes include a discussion of peer threats, positions of relative advantage, multi-domain considerations, and the consolidation of gains as an Army strategic role. These all expand upon unified land operations. ADRP 3-0 employs information, such as principles and tenets, as a means of highlighting key aspects of doctrine. Where lists are employed, a narrative discussion follows to provide details on the subject. They serve as guidelines or tools for readers to more easily remember important doctrinal terms. However, there remains a need to study doctrine in detail and consider how terms are applied to operations. ADRP 3-0 modifies key topics and updates terminology and concepts as necessary. These topics include the discussion of an operational environment and the operational and mission variables, as well as discussions of unified action, law of land warfare, and combat power. Mission command remains both a philosophy of command and a warfighting function. ADRP 3-0 contains five chapters: Chapter 1 discusses military operations. It describes the variables that shape the nature of an operational environment and affect outcomes. The chapter then discusses unified action and joint operations as well as land operations. Finally, this chapter discusses the importance of training to gain skill in land warfare. Chapter 2 discusses the application of operational art. It discusses how commanders should consider defeat and stability mechanisms when developing an operational approach. It then discusses the elements of operational art and their meanings to Army forces. Chapter 3 discusses the Army's operational concept of unified land operations. It discusses how commanders apply landpower as part of unified action to defeat the enemy on land and establish conditions that achieve the joint force commander's end state. Chapter 3 discusses the principles of unified land operations and the tenets of unified land operations. Chapter 4 discusses the operations structure commanders use to array forces and conduct operations. It includes a discussion on the addition of a consolidation area to the operational framework. It concludes with a discussion on the operational framework used in the conduct of unified land operations. Chapter 5 discusses combat power. It opens with a discussion of the elements of combat power. It then discusses the six warfighting functions used to generate combat power and access joint and multinational capabilities. Lastly, it discusses how Army forces organize combat power through force tailoring, task organization, and mutual support.