Book excerpt: This book is a monumental, encyclopedic work of immense detail concerning U.S. and allied forces that fought in the Vietnam War from 1962 through 1973. Includes extensive lists of units (Army, Navy, Air Force, Marine Corps, and allied countries) when they arrived and when they left the theater, shoulder patches and distinctive unit insignia of all divisions and battalions. Also extensive maps portraying unit locations at each six-month interval, lists of friendly and enemy casualties by campaign or phase of the war, and photographs and descriptions of all major types of equipment employed in the conflict.