▁O UN - B . ▁When ▁they ▁failed , ▁K ed yw ▁began ▁an ▁action ▁called ▁" N iesz p ory " ▁( V es pers ) ▁where ▁ 1 1 ▁polic emen ▁were ▁shot ▁in ▁ret ali ation ▁and ▁the ▁mur ders ▁of ▁young ▁Pol es ▁in ▁L viv ▁stopped . ▁ ▁Ro le ▁in ▁the ▁Ukrain ian ▁Ins urg ent ▁Army ▁formation ▁For ▁many ▁who ▁joined ▁the ▁police ▁force , ▁en list ment ▁served ▁as ▁an ▁opportunity ▁to ▁receive ▁military ▁training ▁and ▁direct ▁access ▁to ▁weapons . ▁Band era ' s ▁O UN ▁leadership ▁on ▁ 2 0 ▁March ▁ 1 9 4 3 ▁issued ▁secret ▁instructions ▁ordering ▁their ▁members ▁who ▁had ▁joined ▁the ▁German ▁auxili ary ▁police ▁to ▁desert ▁with ▁their ▁weapons ▁and ▁join ▁with ▁the ▁military ▁det achment ▁of ▁O UN ▁( SD ) ▁units ▁in ▁Vol yn . ▁ ▁The ▁number ▁of ▁trained ▁and ▁armed ▁polic emen ▁who ▁in ▁spring ▁ 1 9 4 3 ▁joined ▁the ▁ranks ▁of ▁the ▁future ▁Ukrain ian ▁Ins urg ent ▁Army ▁were ▁estimated ▁to ▁be ▁ 1 0 , 0 0 0 . ▁This ▁process ▁in ▁some ▁places ▁involved ▁eng aging ▁in ▁armed ▁conflict ▁with ▁German ▁forces ▁as ▁they ▁tried ▁to ▁prevent ▁desert ion . ▁ ▁Batt al ions ▁By ▁ 1 9 4 2 , ▁after ▁the ▁military ▁administration ▁was ▁replaced ▁with ▁the ▁regular ▁G endar mer ie ▁in ▁occupied ▁East , ▁the ▁strength ▁of ▁the ▁Schutz mannschaft ▁had ▁increased ▁ten fold . ▁However , ▁the ▁new ▁rec ruits ▁were ▁mostly