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		<id>https://wiki.sarg.dev/index.php?title=John_de_Chastelain&amp;diff=283699</id>
		<title>John de Chastelain</title>
		<link rel="alternate" type="text/html" href="https://wiki.sarg.dev/index.php?title=John_de_Chastelain&amp;diff=283699"/>
		<updated>2025-04-03T23:40:17Z</updated>

		<summary type="html">&lt;p&gt;99.225.121.26: Re-arrange post-nominals to correctly reflect Order of Precedence&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Short description|Canadian diplomat and soldier}}&lt;br /&gt;
{{Use dmy dates|date=January 2020}}&lt;br /&gt;
{{Infobox officeholder&lt;br /&gt;
| honorific-prefix    = [[General (Canada)|General]]&lt;br /&gt;
| name                = John de Chastelain&lt;br /&gt;
| honorific-suffix    ={{post-nominals|country=CAN| CC | CMM | CD | CH | size=100%}}&lt;br /&gt;
| image               =&lt;br /&gt;
| imagesize           =&lt;br /&gt;
| office              = Chairman of the [[Independent International Commission on Decommissioning]]&lt;br /&gt;
| term_start          = 1997&lt;br /&gt;
| term_end            = 2011&lt;br /&gt;
| predecessor         =&lt;br /&gt;
| successor           =&lt;br /&gt;
| office2             = [[#External links|More...]]&lt;br /&gt;
| birth_date          = {{birth date and age|df=y|1937|07|30}}&lt;br /&gt;
| birth_place         = [[Bucharest]], Kingdom of Romania&lt;br /&gt;
| spouse              = Mary Ann (&#039;&#039;née&#039;&#039; Laverty)&lt;br /&gt;
| children            = 2&lt;br /&gt;
| alma_mater          = {{ubl|[[Royal Military College of Canada]]|[[Mount Royal University]]}}&lt;br /&gt;
| allegiance          = Canada&lt;br /&gt;
| branch              =  [[Land Force Command]]&lt;br /&gt;
| serviceyears        = 1956–1995&lt;br /&gt;
| rank                = [[General officer|General]]&lt;br /&gt;
| unit                = {{ubl|[[Princess Patricia&#039;s Canadian Light Infantry]]|[[The Calgary Highlanders]]}}&lt;br /&gt;
| commands            ={{indented plainlist|&lt;br /&gt;
* 2nd Battalion, [[Princess Patricia&#039;s Canadian Light Infantry|PPCLI]]&lt;br /&gt;
* [[CFB Montreal]]&lt;br /&gt;
* [[Royal Military College of Canada|Royal Military College]]&lt;br /&gt;
* [[4 Canadian Mechanized Brigade Group]]&lt;br /&gt;
* [[Canadian Armed Forces]]&lt;br /&gt;
}}&lt;br /&gt;
| battles             ={{ubl|[[October Crisis]]|[[Oka Crisis]]}}&lt;br /&gt;
| awards= {{indented plainlist|&lt;br /&gt;
* [[Order of the Companions of Honour]] (Member)&lt;br /&gt;
* [[Order of Canada]] (Companion)&lt;br /&gt;
* [[Legion of Merit]] (Commander)&lt;br /&gt;
* [[Order of Military Merit (Canada)|Order of Military Merit (Commander)]]&lt;br /&gt;
* [[Venerable Order of Saint John|Order of St. John (Commander)]]&lt;br /&gt;
* [[Canadian Forces&#039; Decoration]]&lt;br /&gt;
}}&lt;br /&gt;
}}&lt;br /&gt;
&#039;&#039;&#039;Alfred John Gardyne Drummond de Chastelain&#039;&#039;&#039; {{postnominals|country=CAN|CC|CMM|CD|CH}} (born 30 July 1937) is a Canadian retired army officer and diplomat.&lt;br /&gt;
&lt;br /&gt;
De Chastelain was born in Romania to Scottish and American parents and was educated in England and Scotland before his family emigrated to Canada in 1954. There, de Chastelain became a Militia private and enrolled in the [[Royal Military College of Canada]], going on to pursue a career in the [[Canadian Army]].  He was commissioned into [[Princess Patricia&#039;s Canadian Light Infantry]] and rose eventually to be twice [[Chief of the Defence Staff (Canada)|Chief of the Defence Staff]], with a break of a year during which he served as [[List of Canadian ambassadors to the United States|Canada&#039;s ambassador to the United States]]. In 1995, de Chastelain became active in the [[Northern Ireland peace process]] and eventually focused on the disarmament of paramilitary groups in Northern Ireland.&lt;br /&gt;
&lt;br /&gt;
==Early life and education==&lt;br /&gt;
De Chastelain was born in 1937 in [[Bucharest]], Romania, to [[Alfred Gardyne de Chastelain]], a Scottish oil engineer then working in Bucharest for [[Anglo-Iranian Oil Company|British Petroleum]], (later an agent of SOE) and [[Marion Elizabeth (Walsh) de Chastelain|Marion Elizabeth de Chastelain]], an American. He was educated in England and later at [[Fettes College]], Edinburgh. The de Chastelain family emigrated to Canada in 1954, and a year later, after finishing his education at Fettes College, De Chastelain joined his family and attended Mount Royal College (now [[Mount Royal University]]) in [[Calgary]].&amp;lt;ref&amp;gt;{{cite web|url=https://www.mtroyal.ca/AboutMountRoyal/MediaRoom/Newsroom/john-de-chastelain-peace.htm|title=Retired General John de Chastelain becomes namesake of Mount Royal&#039;s Peace Studies Initiative|access-date=26 April 2021|archive-date=26 April 2021|archive-url=https://web.archive.org/web/20210426055215/https://www.mtroyal.ca/AboutMountRoyal/MediaRoom/Newsroom/john-de-chastelain-peace.htm|url-status=live}}&amp;lt;/ref&amp;gt; He married Mary Ann Laverty.&amp;lt;ref&amp;gt;{{cite news|url=https://www.washingtonpost.com/archive/lifestyle/1993/07/05/imported-anecdotes/bbf3bc01-c658-45a8-82e8-2be9c9554a70/|title=Imported anecdotes|newspaper=The Washington Post|date=5 July 1993|access-date=4 July 2019|archive-date=4 July 2019|archive-url=https://web.archive.org/web/20190704110542/https://www.washingtonpost.com/archive/lifestyle/1993/07/05/imported-anecdotes/bbf3bc01-c658-45a8-82e8-2be9c9554a70/|url-status=live}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Military==&lt;br /&gt;
[[File:Cdsdechastelain.jpg|thumb|right|220px|On parade with The [[Calgary Highlanders]] on 30 June 1990; General de Chastelain (top left)]]&lt;br /&gt;
De Chastelain started his military career as a Militia private in the [[Calgary Highlanders]] in which he served from January to September 1956.&amp;lt;ref name=roads&amp;gt;{{cite web|url=http://www.royalroads.ca/news-events/convocation/awards/john-de-chastelain|title=John de Chastelain|publisher=Royal Roads University|access-date=4 July 2019|archive-date=4 July 2019|archive-url=https://web.archive.org/web/20190704103255/http://www.royalroads.ca/news-events/convocation/awards/john-de-chastelain|url-status=live}}&amp;lt;/ref&amp;gt; He was enrolled in the [[Royal Military College of Canada]] in September 1956 and graduated in 1960 with a Bachelor of Arts degree in history and a commission in [[Princess Patricia&#039;s Canadian Light Infantry]] (PPCLI), two years before he became a [[naturalization|naturalized]] Canadian. Performing regimental duty in Canada, Germany, and Cyprus, de Chastelain subsequently attended the [[British Army]] [[Staff College, Camberley|staff college in Camberley]] in 1966 and was commanding officer of the Second Battalion PPCLI from 1970 to 1972.&amp;lt;ref name=ppcli&amp;gt;{{cite web|url=https://ppcli.com/general-a-j-g-d-de-chastelain-cc-cmm-cd-ch/|title=General A.J.G.D. de Chastelain, CC, CMM, CD, CH|publisher=Princess Patricia&#039;s Canadian Light Infantry|access-date=4 July 2019|archive-date=4 July 2019|archive-url=https://web.archive.org/web/20190704104656/https://ppcli.com/general-a-j-g-d-de-chastelain-cc-cmm-cd-ch/|url-status=live}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
As a colonel, he commanded [[CFB Montreal]] for a two-year period ending with the [[1976 Summer Olympics]] in [[Montreal|that city]]. He was also Deputy Chief of Staff of the United Nations Force in Cyprus ([[UNFICYP]]) and Commander of the Canadian contingent there. As a brigadier-general, he successively became Commandant of the Royal Military College of Canada in 1977,&amp;lt;ref name=roads/&amp;gt; Commander of [[4 Canadian Mechanized Brigade Group]] in [[Lahr]], Germany in 1980 and Director General Land Doctrine and Operations at [[Department of National Defence Headquarters (Canada)|National Defence Headquarters]] in Ottawa, Ontario in 1982.&amp;lt;ref name=ppcli/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
As a major-general, de Chastelain was Deputy Commander of the [[Canadian Army]] (then called Mobile Command) and Commander of the Mobile Command Division, which was exercised as such in 1985 on Exercise RV &#039;85. As a lieutenant-general, he became Assistant Deputy Minister for Personnel in 1986&amp;lt;ref name=roads/&amp;gt; and then [[Vice Chief of the Defence Staff (Canada)|Vice-Chief of the Defence Staff]] in 1988.&amp;lt;ref name=roads/&amp;gt; In 1989, he was promoted to the rank of general and appointed [[Chief of the Defence Staff (Canada)|Chief of the Defence Staff]].&amp;lt;ref name=roads/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
In 1993, he transferred to the Reserves and was appointed [[Canadian Ambassador to the United States|Ambassador to the United States]] by [[Brian Mulroney]].&amp;lt;ref name=roads/&amp;gt; In 1994, shortly after the election of [[Jean Chrétien]], he was recalled to Regular Force duty and re-appointed Chief of the Defence Staff, replacing [[John Rogers Anderson|Admiral Anderson]] and vacating the office of Ambassador for [[Raymond Chrétien]]. de Chastelain served as Chief of Defence Staff until his retirement in December 1995.&amp;lt;ref name=roads/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Civilian==&lt;br /&gt;
From November 1995, de Chastelain was involved in the [[Northern Ireland peace process]] and from 1997 to 2011 he was Chairman of the [[Independent International Commission on Decommissioning]], which was responsible for ensuring the [[Decommissioning in Northern Ireland|decommissioning of arms by paramilitary groups in Northern Ireland]]. He has made an impact on the way that Britain has viewed the IRA since the decommissioning has begun. As part of the [[Good Friday Agreement]] an independent neutral adjudicator was selected to look over the disarmament of Republican and Loyalist paramilitary weapons in Northern Ireland.&amp;lt;ref name=roads/&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Honours==&lt;br /&gt;
[[File:Wall of Honour, Royal Military College of Canada.jpg|thumb|left|220px|Wall of Honour, Royal Military College of Canada]]&lt;br /&gt;
In 1985, de Chastelain was appointed Commander of the [[Order of Military Merit (Canada)|Order of Military Merit]] and in 1991, Commander of the [[Venerable Order of Saint John|Order of St John]]; in 1993, he received the Commendation Medal of Merit and Honour of Greece, and was appointed Officer of the [[Order of Canada]]; in 1995,&amp;lt;ref&amp;gt;{{Cite web |url=http://archive.gg.ca/honours/search-recherche/honours-desc.asp?lang=e&amp;amp;TypeID=orc&amp;amp;id=3135 |title=A.J.G.D. de Chastelain, O.C., C.M.M., C.D., C.H. |access-date=29 April 2010 |archive-date=27 March 2012 |archive-url=https://web.archive.org/web/20120327160645/http://archive.gg.ca/honours/search-recherche/honours-desc.asp?lang=e&amp;amp;TypeID=orc&amp;amp;id=3135 |url-status=live }}&amp;lt;/ref&amp;gt; he was appointed Commander of the [[Legion of Merit]] (U.S.A.); in 1999, he was made a [[Member of the Order of the Companions of Honour]]; and in 2014, he was promoted to Companion of the Order of Canada.&amp;lt;ref&amp;gt;{{cite news|url=http://www.gg.ca/document.aspx?id=15694&amp;amp;lan=eng|title=Order of Canada Appointments|date=30 June 2014|access-date=1 July 2014|archive-date=25 July 2018|archive-url=https://web.archive.org/web/20180725183839/http://www.gg.ca/document.aspx?id=15694&amp;amp;lan=eng|url-status=live}}&amp;lt;/ref&amp;gt; Archie Cairns composed a jig for bagpipes in his honour in 1992.&amp;lt;ref&amp;gt;Archie Cairns – Bk1 Pipe Music &#039;General John de Chastelain (1992)&#039; Jig 1995&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
He has an honorary Doctor of Military Science degree from the [[Royal Military College of Canada]], an honorary [[Doctor of Laws]] ([[Conflict Resolution]]) degree from [[Royal Roads University]] in British Columbia, an honorary [[Doctor of Education]] degree from [[Nipissing University]], an honorary [[Doctor of Laws]] degree from [[Carleton University]], an honorary Doctor of Laws degree from [[Queen&#039;s University, Kingston]], an honorary [[Doctor of Civil Law]] degree from [[Saint Mary&#039;s University (Halifax)|Saint Mary&#039;s University]], an honorary Doctor of Laws degree from [[Brock University]], an honorary Doctor of Laws degree from [[Concordia University]], an honorary Doctor of Laws degree from [[Mount Allison University]] and a Doctorate Honoris Causa from the [[University of Edinburgh]], and an honorary [[Doctor of Laws]] degree from [[Mount Royal University]]. He is an Honorary Fellow of [[Lady Margaret Hall, Oxford|Lady Margaret Hall]], [[University of Oxford|Oxford]]. De Chastelain was a recipient of the [[Vimy Award]] in 1992.&amp;lt;ref&amp;gt;[http://www.rmcclub.ca/everitaswp/?p=1430#more-1430 e-Veritas » Blog Archive » Misc&amp;lt;!-- Bot generated title --&amp;gt;] {{webarchive|url=https://web.archive.org/web/20081207122811/http://www.rmcclub.ca/everitaswp/?p=1430 |date=7 December 2008 }}&amp;lt;/ref&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
{{Reflist}}&lt;br /&gt;
&lt;br /&gt;
==External links==&lt;br /&gt;
{{Commons category}}&lt;br /&gt;
* {{OCC|3135}}&lt;br /&gt;
* [https://www.theguardian.com/Northern_Ireland/Story/0,2763,1578667,00.html IRA arms decommissioned]&lt;br /&gt;
&lt;br /&gt;
{{s-start}}&lt;br /&gt;
{{s-aca}}&lt;br /&gt;
{{succession box|title=[[List of Royal Military College of Canada people|Commandant of the Royal Military College of Canada]]|&lt;br /&gt;
                 before=[[William W. Turner]]|&lt;br /&gt;
                 after=John A. Stewart|&lt;br /&gt;
                 years=1977–1980}}&lt;br /&gt;
{{s-mil}}&lt;br /&gt;
{{succession box|title=[[Vice Chief of the Defence Staff (Canada)|Vice Chief of the Defence Staff]]|before=[[Jack Vance (general)|J.E. Vance]]|after=[[Charles Thomas (Canadian admiral)|C.M.W. Thomas]]|years=1988–1989}}&lt;br /&gt;
|-&lt;br /&gt;
{{succession box|title=[[Chief of the Defence Staff (Canada)|Chief of the Defence Staff]]|&lt;br /&gt;
                 before=[[Paul David Manson|P.D. Manson]]|&lt;br /&gt;
                 after=[[John Rogers Anderson|J.R. Anderson]]|&lt;br /&gt;
                 years=1989–1993}}&lt;br /&gt;
{{succession box|title=[[Chief of the Defence Staff (Canada)|Chief of the Defence Staff]]|&lt;br /&gt;
                 before=[[John Rogers Anderson|J.R. Anderson]]|&lt;br /&gt;
                 after=[[Jean Boyle|J.E.J. Boyle]]|&lt;br /&gt;
                 years=1994–1995}}&lt;br /&gt;
{{s-dip}}&lt;br /&gt;
{{succession box|title=[[List of Canadian ambassadors to the United States|Canadian Ambassador Extraordinary&amp;lt;br&amp;gt;and Plenipotentiary to the United States of America]]|&lt;br /&gt;
                 before=[[Derek Burney]]|&lt;br /&gt;
                 after=[[Raymond Chrétien]]|&lt;br /&gt;
                 years=1993–1994}}&lt;br /&gt;
{{s-off}}&lt;br /&gt;
{{succession box|title=Chairman of the [[Independent International Commission on Decommissioning]]|&lt;br /&gt;
                 before=new position|&lt;br /&gt;
                 after=none|&lt;br /&gt;
                 years=1997–2011}}&lt;br /&gt;
{{s-end}}&lt;br /&gt;
&lt;br /&gt;
{{Chief of the Defence Staff (Canada)}}&lt;br /&gt;
{{CA-Ambassadors to the United States}}&lt;br /&gt;
&lt;br /&gt;
{{DEFAULTSORT:Chastelain, John}}&lt;br /&gt;
[[Category:1937 births]]&lt;br /&gt;
[[Category:Living people]]&lt;br /&gt;
[[Category:Chiefs of the Defence Staff (Canada)]]&lt;br /&gt;
[[Category:Vice chiefs of the Defence Staff (Canada)]]&lt;br /&gt;
[[Category:Canadian Presbyterians]]&lt;br /&gt;
[[Category:Canadian generals]]&lt;br /&gt;
[[Category:Ambassadors of Canada to the United States]]&lt;br /&gt;
[[Category:Canadian Members of the Order of the Companions of Honour]]&lt;br /&gt;
[[Category:Commanders of the Order of St John]]&lt;br /&gt;
[[Category:Commanders of the Legion of Merit]]&lt;br /&gt;
[[Category:British emigrants to Canada]]&lt;br /&gt;
[[Category:Canadian people of Scottish descent]]&lt;br /&gt;
[[Category:Canadian people of American descent]]&lt;br /&gt;
[[Category:Canadian Army officers]]&lt;br /&gt;
[[Category:Companions of the Order of Canada]]&lt;br /&gt;
[[Category:Royal Military College of Canada alumni]]&lt;br /&gt;
[[Category:People educated at Fettes College]]&lt;br /&gt;
[[Category:Fellows of Lady Margaret Hall, Oxford]]&lt;br /&gt;
[[Category:Northern Ireland peace process]]&lt;br /&gt;
[[Category:Commandants of the Royal Military College of Canada]]&lt;br /&gt;
[[Category:Mount Royal University alumni]]&lt;br /&gt;
[[Category:Graduates of the Staff College, Camberley]]&lt;br /&gt;
[[Category:Commanders of the Order of Military Merit (Canada)]]&lt;br /&gt;
[[Category:Canadian military musicians]]&lt;br /&gt;
[[Category:Princess Patricia&#039;s Canadian Light Infantry officers]]&lt;br /&gt;
[[Category:Calgary Highlanders]]&lt;br /&gt;
[[Category:Calgary Highlanders soldiers]]&lt;/div&gt;</summary>
		<author><name>99.225.121.26</name></author>
	</entry>
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