text: Preface
  FM 1-02.1 constitutes approved Army doctrinal terminology for general use. The principal audience for this
  manual are 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 echelons ensure their
  Soldiers operate in accordance with the law of war and the rules of engagement.
  This publication implements the following international agreements:
  STANAG 1059 (ED. 8). Letter Codes for Geographical Entities. 01 April 2004.
  STANAG 1241 (ED. 5). NATO Standard Identity Description Structure for Tactical Use. 06 April 2005.
  STANAG 3680 (ED. 5). NATOTerm database. https://nso.nato.int/natoterm/Web.mvc.
  FM 1-02.1 uses joint terms where applicable.
  FM 1-02.1 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 FM 1-02.1 is the United States Army Combined Arms Center. The preparing agency is the
  Combined Arms Doctrine Directorate, United States Army Combined Arms Center. Send comments and
  recommendations on DA Form 2028 (Recommended Changes to Publications and Blank Forms) to
  Commander, United States Army Combined Arms Center and Fort Leavenworth, ATZL-MCD (FM X-XX),
  300 McPherson Avenue, Fort Leavenworth, KS 66027-2337; by email to
  usarmy.leavenworth.mccoe.mbx.cadd-org-mailbox@army.mil; or submit an electronic DA Form 2028.