Non-commissioned armed forces officers enforce military discipline and supervise the activities of those employed in Sub-major Group 03: Armed Forces Occupations, Other Ranks, and/or perform similar tasks to those performed in a variety of civilian occupations outside the armed forces. This group includes members of the armed forces holding ranks such as sergeant, warrant officer and sergeant major. Competent performance in most occupations in this sub-major group requires skills at the second ISCO skill level.