5 8 . ▁Queen ▁led ▁the ▁pl ato on ▁on ▁a ▁s ne ak ▁attack ▁of ▁the ▁Chinese ▁force ▁on ▁ 1 7 ▁May , ▁covered ▁by ▁ 7 th ▁Division ▁art illery ▁fire . ▁At ▁ 1 5 : 0 0 , ▁they ▁engaged ▁the ▁surprised ▁Chinese , ▁conduct ing ▁a ▁double ▁en velop ment ▁supported ▁by ▁continued ▁art illery ▁fire . ▁By ▁ 1 7 : 0 0 , ▁the ▁R angers ▁secured ▁Hill ▁ 5 8 1 ▁from ▁the ▁Chinese , ▁who ▁suffered ▁ 5 0 ▁killed ▁and ▁ 9 0 ▁wounded ▁in ▁the ▁attack . ▁ ▁Chinese ▁troops ▁counter att ack ed ▁in ▁force ▁at ▁ 2 3 : 0 0 , ▁with ▁two ▁batt al ions ▁of ▁inf antry ▁supported ▁by ▁sn ip ers ▁and ▁mort ar ▁fire . ▁A ided ▁by ▁ 7 th ▁Division ▁art illery ▁fire , ▁the ▁R angers ▁held ▁the ▁hill ▁against ▁Chinese ▁resistance . ▁The ▁R angers ▁rep uls ed ▁four ▁success ive ▁Chinese ▁assault s ▁by ▁one ▁of ▁the ▁batt al ions , ▁exp ending ▁all ▁of ▁their ▁gr en ades ▁by ▁ 0 2 : 0 0 ▁on ▁ 1 8 ▁May , ▁and ▁running ▁short ▁on ▁am mun ition ▁by ▁ 0 3 : 0 0 . ▁At ▁that ▁point , ▁the ▁second ▁Chinese ▁batt alion ▁comm enced ▁its ▁assault , ▁surprising ▁the ▁R angers ▁and ▁driving ▁them ▁from ▁the ▁peak ▁of ▁Hill ▁ 5 8 1 . ▁Queen ▁counter att ack ed ▁and ▁re to ok ▁the ▁hill