Editing Sir (section)

===Military and police===
If not specifically using their rank or title, 'sir' is used in the [[United States Armed Forces]] to address a male commissioned officer.  Lower-ranking and [[non-commissioned officer]]s, such as corporals or sergeants, are addressed using their ranks,<ref>{{cite book|title=NCO Guide|page=328|edition=9th|last=Rush|first=Robert S.|year=2010|publisher=Stackpole Book|location=PA, US|isbn=9780811736145}}</ref> though in some of the branches (to be precise, in the Air Force, Marine Corps and Coast Guard), "sir" can also be used to address a drill instructor although he is an NCO.

In the [[British Armed Forces]], male commissioned officers and [[warrant officers]] are addressed as 'sir' by all ranks junior to them, male warrant officers are addressed as ''Mr'' by commissioned officers.<ref>{{cite web|url=http://www.raf.mod.uk/links/faqs.cfm|publisher=RAF|title=Frequently Asked Questions|access-date=4 February 2015|url-status=dead|archive-url=https://web.archive.org/web/20100502065436/http://www.raf.mod.uk/links/faqs.cfm|archive-date=2 May 2010}}</ref>

In the [[Royal Canadian Mounted Police]] (RCMP), only [[commissioned officers]] are addressed as 'sir'; NCOs and [[constables]] are addressed by their rank.  Male [[British police]] officers of the rank of [[Inspector]] or above are addressed as 'Sir' (women of inspecting rank are called Ma'am).{{citation needed|date=April 2013}}

In the [[Hong Kong Police Force]], male superiors are respectfully known by their surname followed by 'sir'. For example, Inspector Wong would be addressed or referred to as 'Wong-sir'. Male police officers are sometimes known colloquially as "Ah-sir" (阿Sir) to the wider public.<ref>{{cite book|title=Urbanizing China|year=1992|page=171|publisher=[[Greenwood Publishing Group]]|first=Gregory Eliyu|last=Guldin}}</ref>