onial ▁Division . ▁On ▁the ▁right ▁fl ank ▁of ▁the ▁brig ade ▁the ▁ 3 rd ▁Infantry ▁Regiment ▁advanced ▁against ▁the ▁" He int sel man " ▁hill ▁which ▁was ▁occupied ▁a ▁batt alion ▁of ▁the ▁German ▁ 4 2 nd ▁Infantry ▁Regiment ▁while ▁at ▁the ▁same ▁time ▁on ▁the ▁left ▁fl ank ▁the ▁▁ 4 th ▁Infantry ▁Regiment ▁attacked ▁the ▁important ▁Hill ▁" D ab ica " ▁which ▁was ▁def ended ▁by ▁another ▁batt alion ▁of ▁the ▁German ▁ 4 2 nd ▁Infantry ▁Regiment . ▁As ▁soon ▁as ▁the ▁Rus si ans ▁were ▁sp otted ▁the ▁German ▁and ▁Bulgar ian ▁art illery ▁opened ▁fire ▁on ▁their ▁adv ancing ▁waves ▁of ▁inf antry ▁which ▁allowed ▁only ▁parts ▁of ▁the ▁Russian ▁ 3 rd ▁Regiment ▁to ▁enter ▁the ▁" He its el man " ▁tren ches ▁while ▁most ▁of ▁its ▁soldiers ▁had ▁sought ▁cover ▁next ▁to ▁the ▁bar bed ▁wire ▁before ▁the ▁hill ▁itself . ▁At ▁D ab ica ▁however ▁the ▁German ▁art illery ▁proved ▁too ▁weak ▁to ▁halt ▁the ▁attack ▁of ▁the ▁Russian ▁ 4 th ▁Infantry ▁Regiment , ▁whose ▁troops ▁successfully ▁pen etr ated ▁into ▁the ▁main ▁tren ch ▁with ▁the ▁help ▁of ▁hand ▁gr en ades ▁and ▁advanced ▁so ▁rapidly ▁through ▁it ▁that ▁by ▁ 8 : 0 0 ▁the ▁entire ▁hill ▁fell ▁under ▁their ▁control . ▁As ▁result ▁the ▁headquarters ▁of ▁the ▁ 2 2 nd ▁German - B ul gar ian ▁lost ▁connection ▁with ▁its ▁troops ▁in ▁the ▁area ▁and ▁received ▁no ▁clear ▁information ▁about ▁the ▁situation ▁until ▁late