A non-commissioned officer (sometimes spelled noncommissioned officer, abbreviated to NCO or non-com (US)), called a sub-officer in some countries, is a military officer who has not been given a commission. Non-commissioned officers, in the English-speaking world, usually obtain their position of authority by promotion through the enlisted ranks.
The NCO corps usually includes all grades of corporal and sergeant; in some countries, warrant officers also carry out the duties of NCOs. The naval equivalent includes some or all grades of petty officer, although not all navies class their petty officers as NCOs. There are different classes of non-commissioned officer, including junior non-commissioned officers (JNCO) and senior (or staff) non-commissioned officers (SNCO).
Read more about Non-commissioned Officer: Function, Related Abbreviations
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“The duties which a police officer owes to the state are of a most exacting nature. No one is compelled to choose the profession of a police officer, but having chosen it, everyone is obliged to live up to the standard of its requirements. To join in that high enterprise means the surrender of much individual freedom.”
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