Army Doctrine Publication (ADP) 2-0 provides a common construct for intelligence. This publication describes the key aspects of intelligence support to unified land operations and establishes the doctrinal foundation for Army intelligence. (See figure 1.) It also serves as a reference for intelligence- - Personnel who are developing doctrine. - Leader development. - Materiel and force structure. - Institutional and unit training for intelligence. The fundamentals of intelligence have migrated to two new publications-ADP 2-0 and Army Doctrine Reference Publication (ADRP) 2-0, Intelligence. The doctrinal constructs introduced in this publication are further explained in ADRP 2-0. For the purposes of this publication, the terms threats and range of threats include enemies and adversaries. The term hazards refers to conditions or natural phenomena able to damage or destroy life, vital resources, and institutions, or prevent mission accomplishment. The principal audience for ADP 2-0 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 also use this publication. 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.) ADP 2-0 uses joint terms where applicable. Selected joint and Army terms and definitions appear in both the glossary and the text. For definitions shown in the text, the term is italicized and the number of the proponent publication follows the definition. This publication is not the proponent for any Army terms. ADP 2-0 applies to the Active Army, Army National Guard/Army National Guard of the United States, and United States Army Reserve unless otherwise stated. The proponent of ADP 2-0 is the U.S. Army Intelligence Center of Excellence. The preparing agency is the Capabilities Development and Integration Division, U.S. Army Intelligence Center of Excellence, Fort Huachuca, Arizona.