▁ 1 0 ▁September , ▁do z ens ▁of ▁milit iam en ▁of ▁the ▁pro - g overn ment ▁Forces ▁of ▁the ▁F igh ters ▁of ▁the ▁Trib es ▁joined ▁the ▁S DF . ▁These ▁milit iam en ▁had ▁previously ▁been ▁over run ▁by ▁I SI L ▁during ▁the ▁Central ▁Sy ria ▁campaign ▁and ▁retre ated ▁into ▁S DF - h eld ▁areas ▁in ▁order ▁to ▁avoid ▁being ▁captured ▁by ▁the ▁Islam ist ▁milit ants . ▁Fe eling ▁abandoned ▁by ▁their ▁old ▁commander , ▁they ▁eventually ▁decided ▁to ▁stay ▁with ▁the ▁S DF . ▁ ▁At ▁some ▁point ▁during ▁the ▁Battle ▁of ▁Ra qq a ▁( 2 0 1 7 ), ▁the ▁" El ite ▁Forces " ▁fell ▁out ▁with ▁the ▁S DF , ▁and ▁officially ▁left ▁the ▁al liance . ▁There after , ▁the ▁group ▁reported ly ▁dis integr ated . ▁ ▁On ▁ 1 5 ▁November ▁ 2 0 1 7 , ▁Tal al ▁Sil o , ▁defect ed ▁or ▁surrender ed ▁to ▁the ▁Turkish ▁Army , ▁the ▁nature ▁of ▁his ▁leaving ▁the ▁S DF ▁being ▁up ▁for ▁dispute . ▁ ▁On ▁ 2 7 ▁November ▁ 2 0 1 7 , ▁the ▁Mart yr ▁Ad nan ▁Ab u ▁Am j ad ▁Regiment , ▁consisting ▁of ▁ 2 5 0 ▁f igh ters ▁was ▁established , ▁and ▁joined ▁the ▁Man bij ▁Military ▁Council ▁ ▁On ▁ 2 0 ▁December ▁ 2 0 1 7 , ▁H uss am ▁Aw ak ▁announced ▁his ▁res ignation ▁from ▁the ▁S DF ▁on ▁his ▁Facebook