This guide supplement provides users with up-to-date information on Army enlisted and warrant officer military occupational specialties (MOS's), including recommendations for all MOS's evaluated through October 1977. Following an introductory section on how to use the guide, the remaining content is in two sections. The first contains over 600 exhibits for enlisted MOS's, and the second over seventy exhibits for warrant officer MOS's. Each of these exhibits includes an I.D. number, title, MOS designation (a code number), skill levels codes, effective exhibit dates, career management field, (related MOS's and sub-fields) or career pattern (enlisted or other warrant officer MOS's a warrant officer may have previously held), description (which, for enlisted MOS's, includes a general description of duties and qualifications that apply to the relevant skill levels, followed by descriptions of the skills, competencies, and knowledge required for proficiency at each skill level; and, for warrant officers, a description of duties and qualifications required in the MOS), and educational/training recommendations which, for enlisted MOS's, are given for each skill level (includes category, amount, and subject area). The appendix includes information on how MOS's are evaluated, descriptions of additional characters making up the MOS's, descriptions of the career management fields, and the Army Occupational Title Index. (EM)