Having evolved over the past two and a quarter centuries to become the premier military force in the world, the U.S. Army has a heritage rich in history and tradition. This historical dictionary provides short, clear, authoritative entries on a broad cross section of military terms, concepts, arms and equipment, units and organizations, campaigns and battles, and people who have had a significant impact on Army. It includes over 900 entries written by some 100 scholars, providing a valuable resource for the interested reader, student, and researcher. For those interested in pursuing specific subjects further, the book provides sources at the end of each entry as well as a general bibliography. Appendixes provide a useful list of abbreviations and acronyms and a listing of ranks and grades in the U.S. Army.

Coverage of publications outside the UK and in non-English languages expands steadily until, in 1991, it occupies enough of the Guide to require publication in parts.