the Flag of Jaysh al-Islam (black variant)
Jaysh_Al_Islam_Logo.svg
Sources for flag: File:Duma after the recapture by the Syrian Arab Army 10.jpg , http://www.syriahr.com/en/?p=88405 , https://arabi21.com/story/867726/%D8%AC%D9%8A%D8%B4-%D8%A7%D9%84%D8%A5%D8%B3%D9%84%D8%A7%D9%85-%D9%8A%D8%B3%D8%AA%D8%B9%D8%B1%D8%B6-%D9%85%D9%86%D8%A7%D9%88%D8%B1%D8%A7%D8%AA-%D8%B9%D8%B3%D9%83%D8%B1%D9%8A%D8%A9-%D8%B6%D8%AE%D9%85%D8%A9-%D8%A8%D8%B1%D9%8A%D9%81-%D8%AF%D9%85%D8%B4%D9%82-%D8%B4%D8%A7%D9%87%D8%AF
Jaysh al-Islam