'''Other non-Syrian fighters:'''<br />4,585 killed<ref name=SOHR/> <small>({{flagdeco|Iran|size=23px}} 419)</small><ref name="fpiran">[http://www.longwarjournal.org/archives/2016/06/irgc-officer-college-mourns-comrade-killed-in-syria.php IRGC officer college mourns comrade killed in Syria] (see twitter link on 13 deaths in June)</ref>
|casualties3= {{flagdeco|ISIL}} '''ISIL:''' <br> 8,850+ killedTewas <small>(per SOHR)</small><ref>{{cite web|url=http://www.geo.tv/article-189504-IS-executes-over-3000-in-Syria-in-year-long-caliphate|title=IS executes over 3,000 in Syria in year-long ´caliphate´|date=28 June 2015|work=AFP}}<br>[http://www.syriahr.com/en/2016/04/30/9-weeks-of-the-truce-and-cease-of-fight-operations-kills-almost-5600-people-in-most-of-the-syrian-provinces/ 9 weeks of the “truce and cease of fight operations” kills almost 5,600 people in most of the Syrian provinces]<br>{{cite web|url=http://www.syriahr.com/en/2016/05/29/46519|title=81 executions during the 23rd month “the Islamic State’s Caliphate” in Syria rise the number of executions carried out by the “Islamic State” to 4225|publisher=SOHR|accessdate=29 May 2016}}<br>[http://www.israelnationalnews.com/News/News.aspx/212933#.V0rWMrh96Uk Thousands flee ISIS offensive in northern Syria]</ref><br>16,089+ killed <small>(per SAA and YPG)</small><ref name="ISCasualtiesDiclehaber">{{Cite web |url=http://www.diclehaber.com/en/news/content/view/437247?from=2102159856 |title=YPG releases balance-sheet of 2014: Nearly 5,000 ISIS members killed |access-date=2016-07-28 |archive-date=2016-09-14 |archive-url=https://web.archive.org/web/20160914160338/http://www.diclehaber.com/en/news/content/view/437247?from=2102159856 |dead-url=yes }}</ref><ref name="ISCasualtiesYPGRojava">{{Cite web |url=http://ypgrojava.com/en/2016/01/01/balance-of-the-war-against-hostile-groups-in-rojava-northern-syria-year-2015/ |title=Balance of the War Against Hostile Groups in Rojava, Northern Syria: Year 2015 |access-date=2016-07-28 |archive-date=2016-01-26 |archive-url=https://web.archive.org/web/20160126073438/http://ypgrojava.com/en/2016/01/01/balance-of-the-war-against-hostile-groups-in-rojava-northern-syria-year-2015/ |dead-url=yes }}</ref><ref name="ISCasualtiesSputnik">{{cite web|url=http://sputniknews.com/middleeast/20141225/1016239222.html|title=Syrian Army Kills Nearly 5,000 IS Militants in Three Months: Source|date=25 December 2014|work=sputniknews.com}}</ref><ref>[http://sana.sy/en/?p=72949 The army takes full control of Palmyra city, hundreds of ISIS terrorists killed]</ref>
|casualties4= {{flagicon|Rojava}} '''Rojava:'''<br>3,182 killed<ref>{{cite web|url=http://www.nybooks.com/articles/2015/12/03/syrian-kurds-are-winning/|title=The Syrian Kurds Are Winning!|author=Jonathan Steele|work=The New York Review of Books|accessdate=12 April 2016}}</ref><ref>182 killed (2016),[http://ku.hawarnews.com/ji-ypge-bilancoya-meha-cileye/] {{Webarchive|url=https://web.archive.org/web/20160922124632/http://ku.hawarnews.com/ji-ypge-bilancoya-meha-cileye/ |date=2016-09-22 }}[http://en.hawarnews.com/ypg-releases-balance-sheet-of-war-in-february/] {{Webarchive|url=https://web.archive.org/web/20160922125352/http://en.hawarnews.com/ypg-releases-balance-sheet-of-war-in-february/ |date=2016-09-22 }}[http://dckurd.org/2016/04/05/ypg-announces-the-balance-sheet-of-war-for-march/] {{Webarchive|url=https://web.archive.org/web/20160811032707/http://dckurd.org/2016/04/05/ypg-announces-the-balance-sheet-of-war-for-march/ |date=2016-08-11 }} total of 182 reported killed</ref>
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{{flagicon image|Inherent Resolve.jpg|border=no}}'''[[Combined Joint Task Force – Operation Inherent Resolve|CJTF–OIR]]:'''<br>2021 Tewas<ref>{{cite news|url=http://timesofindia.indiatimes.com/world/us/Marine-is-first-US-death-in-operations-against-Islamic-State/articleshow/44263023.cms|title=Marine is first US death in operations against Islamic State|work=The Times of India|accessdate=25 October 2014}}</ref><ref>[http://www.bbc.com/news/world-middle-east-31129416 Jordan pilot murder: Islamic State deploys asymmetry of fear]</ref>