This is a monumental, encyclopaedic work of immense detail concerning US Army and allied forces that fought in the Vietnam War from 1962 through 1973. Extensive lists of units provide a record of every Army unit that served in Vietnam, down to and include separate companies, and also include US Army aviation and riverine units. Shoulder patches and distinctive unit insignia of all divisions and battalions. Extensive maps portray unit locations at each six-month interval. The title includes photographs and descriptions of all major types of equipment employed in the conflict.