sect arian ▁Sy rian ▁region ▁being ▁liber ated ▁from ▁IS IS . ▁Over ." ▁ ▁Late ▁June , ▁an ▁analysis ▁by ▁the ▁C ounter ▁T error ism ▁Center ▁at ▁West ▁Point ▁said ▁" g row ing ▁accept ance ▁of ▁the ▁S DF ▁by ▁Sun ni ▁Arab ▁re bel ▁groups " ▁and ▁more ▁generally ▁" g row ing ▁legit im acy ▁of ▁the ▁S DF ". ▁Another ▁analysis ▁as ▁of ▁late ▁June ▁described ▁the ▁Y PG ▁as ▁" only ▁one ▁fa ction ▁of ▁many ▁within ▁the ▁S DF ", ▁however ▁that ▁" it ' s ▁the ▁Y PG ▁that ▁makes ▁the ▁S DF ▁reliable ▁and ▁effective . ▁The ▁S DF ' s ▁other ▁components ▁function ▁as ▁auxili aries ▁to ▁the ▁S DF ' s ▁' back bone ', ▁the ▁Y PG , ▁which ▁ens ures ▁effective , ▁unit ary ▁command ▁and ▁control ." ▁ ▁On ▁ 1 3 ▁February , ▁the ▁first ▁Y PG / Y P J ▁regiment ▁in ▁the ▁Eu phr ates ▁Region ▁was ▁declared . ▁The ▁second ▁regiment , ▁named ▁ Ş eh î d ▁ Ş ev ger ▁Kob an î ▁Regiment ▁was ▁established ▁on ▁ 1 8 ▁February . ▁A ▁total ▁of ▁ 4 ▁reg iments ▁were ▁declared . ▁ ▁On ▁ 2 5 ▁February ▁ 2 0 1 7 , ▁the ▁Y PG ▁agreed ▁to ▁hand ▁over ▁security ▁in ▁the ▁Ass y rian ▁towns ▁along ▁the ▁K hab ur ▁River ▁to ▁the ▁K hab our ▁Gu ards ▁and ▁N att ore h ▁which ▁joined ▁the ▁S DF .