Salim Idris was born in 1957 in the village of El-Mubarakiya located east of Humus.
He graduated from the Electrical Engineering Department of the University of Aleppo. He also holds master degree in Information Technology from the Higher Institute of Transportation and Communications in Eastern Germany.
He did his doctoral thesis in the field of “Electronic radars”.
In parallel with his academic studies, he also received military training. In Aleppo he served as an instructor of the Assad Military Academy and later as a director of the Institute of Engineering within the same Academy.
He authored about 12 books on military issues and wrote the article titled ‘Give us the weapons we need to beat Assad’ for Foreign Policy Magazine.
On December 15, 2012 he was elected as the Chief of Staff of the Syrian Supreme Military Council and took the office of the Commander of the Free Syrian Army at the conference organized in Turkey aiming to unite military wings of the Syrian opposition. Thus, he sided with the opposition in Syrian Civil War.
In 2014, Idris left his post as the Chief of General Staff of Free Syrian Army.
In 2019 Idris was appointed as a Defense Minister of the Syrian Interim Government and he became the Chief of Staff of the Syrian National Army.
 ‘’Özgür Ordu Genelkurmay Başkanı Salim Idris’’,Aljazeera, 18 June 2013
https://www.aljazeera.net/news/reportsandinterviews/2013/6/18/%D8%B1%D8%A6%D9%8A%D8%B3-%D8%A3%D8%B1%D9%83%D8%A7%D9%86-%D8%A7%D9%84%D8%AC%D9%8A%D8%B4-%D8%A7%D9%84%D8%AD%D8%B1-%D8%B3%D9%84%D9%8A%D9%85-%D8%A5%D8%AF%D8%B1%D9%8A%D8%B3(Accessed: January 7, 2020).
 Enab Baladi, “Three Syrian Regime Defector Commanders In Charge of The National Army, Who Are They?”,Enab Baladi, 7 November 2019 https://english.enabbaladi.net/archives/2019/10/three-syrian-regime-defector-commanders-in-charge-of-the-national-army-who-are-they/(Accessed: January 7, 2020).
 Selim İdris,‘‘Give Us the Weapons We Need to Beat Assad’’,Foreign Policy, 1 Mart 2013 https://foreignpolicy.com/2013/03/01/give-us-the-weapons-we-need-to-beat-assad/(Accessed: January 8, 2020).
 Christopher M. Blanchard ve Mary Beth D. Nikitin, ‘’Armed Conflict in Syria: Overview and U.S. Response’’,Congressional Research Service, 25 March 2018 https://fas.org/sgp/crs/mideast/RL33487.pdf(Accessed: January 8, 2020).
 Elizabeth O’Bagy ,‘’The Free Syrian Army’’,Institute for the Study of War, Middle East Security Report, March 2013 http://www.understandingwar.org/sites/default/files/The-Free-Syrian-Army-24MAR.pdf(Accessed: January 7, 2020). And see also: ‘’Free Syrian Army replaces chief-of-staff Salim Idris’’ ,BBC, 17 February 2014 https://www.bbc.com/news/world-middle-east-26224498(Accessed: January 7, 2020).
 Eşber Ayaydın, ”Suriye’deki Milli Ordu ve Ulusal Kurtuluş Cephesi birleşti”,Anadolu Ajansı, 4 October 2019, https://www.aa.com.tr/tr/dunya/suriyedeki-milli-ordu-ve-ulusal-kurtulus-cephesi-birlesti/1602325(Accessed: January 9, 2020).