(of a member of the armed forces) having achieved the rank of officer by rising from the lower ranks rather than by receiving a commission

Senior non-commissioned officers were assigned to investigate.

He had always been a champion of non-commissioned servicemen.

A Company Sergeant Major (CSM) is the senior non commissioned soldier of a company in the armies of many Commonwealth countries. 在许多英联邦国家的军队中，连级军士长（CSM）是一个连队中的高级非委任身份的士兵。