Dated 28 Feb 2024

FM 1-02.1 constitutes approved Army doctrinal terminology for general use. The principal audience for this manual are all members of the profession of Arms.

This second edition of FM 1-02.1 compiles all Army terms and definitions approved for use in Army doctrinal publications, including ADPs, FMs, and ATPs. It also includes joint and North Atlantic Treaty Organization (NATO) terms used and listed in the glossaries of Army doctrinal publications as of September 2020.

FM 1-02.1 is organized as follows:

Chapter 1 presents defined terms.

Chapter 2 presents acronyms, abbreviations, and country codes.

Examples:

attack position - (Army) The last position an attacking force occupies or passes through before crossing the line of departure. (ADP 3-90)

situational understanding – The product of applying analysis and judgment to relevant information to determine the relationship among the operational and mission variables to facilitate decision making. (ADP 6-0)

This book is a "mini" (half the size of a regular sheet of paper) size - A popular size to carry anywhere (briefcase, large pocket, purse) but the print is large enough for easy reading.  The binding is with coil, allowing easy flipping of pages without jamming.

This website also has this book in the BIG size (the size of a regular sheet of paper).

The color covers are laminated for weather protection with black and white inside printing.