NATO military ranks use a standardized system of codes to allow for comparison between member nations, though the specific names for each rank vary by country.
STANAG 2116 (Edition 6), effective 25 February 2010 to 13 January 2021
A non-commissioned officer is an enlisted leader, petty officer, or in some cases warrant officer, who does not hold a commission. Non-commissioned officers usually earn their position of authority by
NATO military rank codes
…forces of Albania, Latvia and Luxembourg also lack the OF-9 rank. OR-9 – OR-1 (highest to lowest rank code) are used for other ranks (enlisted ranks and non-commissioned officers (NCO)): OR-9 – OR-5: Non-commissioned officers…
A sergeant of the Coldstream Guards addressing through the ranks during the rehearsal for the Trooping the Colour ceremony.
Sergeant, Royal Artillery, on the esplanade of Edinburgh Castle, firing the one o'clock gun
A First Sergeant with the 55th Signal Company (Combat Camera) gets his soldiers ready for a uniform inspection