FM 1 is one of the Army’s two capstone doctrinal manuals. The other is FM 3-0, Operations. FM 1’s audience includes the Executive Branch; Congress; Office of the Secretary of Defense; Joint Staff; combatant commanders; other Services; officers, noncommissioned officers, and enlisted Soldiers of all Army components; and Army civilians.

FM 1 is prepared under the direction of the Army Chief of Staff. It states what the Army is, what the Army does, how the Army does it, and where the Army is going. It establishes the Army’s operational concept and other fundamental principles for employing landpower in support of the National Security, National Defense, and the National Military Strategies. FM 1 delineates the Army’s purpose, roles, and functions as established by the Constitution; the Congress, in Title 10, United States Code; and the Department of Defense, in Department of Defense Directive 5100.1. FM 1 is also the Army Chief of Staff’s vision for the Army.

To facilitate joint interdependence, Army doctrine supports and is consistent with joint doctrine. FM 1 connects Army doctrine to joint doctrine as expressed in the relevant joint doctrinal publications, especially, Joint Publication 1, Joint Warfare of the Armed Forces of the United States, and Joint Publication 3-0, Doctrine for Joint Operations. FM 1 also links the National Security, National Defense, and National Military Strategies with the Army’s operational doctrine in FM 3-0.

This publication contains copyrighted material.

This publication applies to the Active Army, Army National Guard, and U.S. Army Reserve.

U.S. Army Training and Doctrine Command is the proponent for this publication. The preparing agency is the Combined Arms Doctrine Directorate, U.S. Army Combined Arms Center. Send written comments and recommendations on DA Form 2028 (Recommended Changes to Publications and Blank Forms) directly to Commander, U.S. Army Combined Arms Center and Fort Leavenworth, ATTN: ATZL-CD (FM 1), 201 Reynolds Avenue, Fort Leavenworth, KS 66027-2337. Send comments and recommendations by e-mail to Follow the DA Form 2028 format or submit an electronic DA Form 2028.