▁and ▁to ▁grow ▁long ▁hair ▁and ▁be ards . ▁Since ▁ 2 0 1 6 , ▁the ▁group ▁has ▁executed ▁more ▁than ▁ 2 0 ▁people , ▁mostly ▁in ▁the ▁town ▁of ▁Sh aj ara , ▁by ▁be head ing . ▁The ▁group ▁had ▁also ▁locked ▁sm ok ers ▁in ▁c ages ▁and ▁am put ated ▁people ▁on ▁alleg ations ▁of ▁the ft . ▁ ▁History ▁ ▁The ▁group ▁was ▁named ▁after ▁K hal id ▁ibn ▁al - W al id , ▁who ▁led ▁the ▁Muslim ▁arm ies ▁in ▁the ▁Battle ▁of ▁Y arm ou k ▁in ▁ 6 3 6 ▁CE , ▁which ▁inf lic ted ▁a ▁heavy ▁defeat ▁on ▁the ▁By z antine ▁Army ▁and ▁led ▁to ▁the ▁Muslim ▁con quest ▁of ▁the ▁Lev ant . ▁ ▁The ▁date ▁on ▁the ▁document ▁declaring ▁the ▁establishment ▁of ▁the ▁group ▁is ▁ 1 4 ▁Sh a ' aban ▁ 1 4 3 7 , ▁corresponding ▁to ▁Saturday ▁ 2 1 ▁May ▁ 2 0 1 6 ▁and ▁is ▁signed ▁by ▁Ab u ▁Hash im ▁al - Sh ami ▁( also ▁known ▁as ▁Ab u ▁Hash im ▁al - H am aw i ), ▁the ▁em ir ▁of ▁the ▁group . ▁ ▁On ▁ 1 4 ▁August ▁ 2 0 1 6 , ▁the ▁K hal id ▁ibn ▁al - W al id ▁Army ▁launched ▁a ▁major ▁attack ▁against ▁the ▁Army ▁of ▁Con quest - h eld ▁town ▁of ▁Haw d ▁al - Y arm ou k ; ▁however , ▁despite ▁heavy ▁fighting ▁and