lied ▁art illery ▁on ▁this ▁part ▁of ▁the ▁front ▁was ▁forced ▁to ▁pause ▁its ▁bar rage ▁for ▁some ▁time ▁in ▁the ▁afternoon ▁due ▁to ▁the ▁appearance ▁of ▁German ▁f ighter ▁aircraft ▁and ▁the ▁destruction ▁of ▁one ▁of ▁their ▁observation ▁bal lo ons . ▁With ▁the ▁coming ▁of ▁the ▁night ▁the ▁Al lied ▁fire ▁was ▁significantly ▁reduced ▁in ▁intensity ▁which ▁gave ▁a ▁chance ▁to ▁the ▁def enders ▁to ▁repair ▁part ▁of ▁the ▁inf lic ted ▁damage . ▁ ▁At ▁ 6 : 0 0 ▁On ▁ 6 ▁of ▁May ▁the ▁Al lied ▁art illery ▁renew ed ▁its ▁bomb ard ment ▁and ▁continued ▁in ▁the ▁same ▁manner ▁as ▁the ▁day ▁before ▁throughout ▁the ▁entire ▁day . ▁This ▁time ▁however ▁the ▁It ali ans , ▁French ▁and ▁Rus si ans ▁also ▁sent ▁pat rol s ▁to ▁check ▁the ▁effect ▁of ▁the ▁bomb ard ment ▁on ▁the ▁Bulgar ian - G erman ▁lines ▁and ▁test ▁the ▁strength ▁of ▁the ▁fort ifications . ▁The ▁Bulg ari ans ▁and ▁Germ ans ▁managed ▁to ▁hold ▁off ▁their ▁attempts ▁to ▁close ▁on ▁the ▁lines ▁by ▁strong ▁inf antry ▁and ▁art illery ▁fire . ▁On ▁this ▁day ▁the ▁Central ▁Pow ers ▁art illery ▁took ▁a ▁more ▁active ▁part ▁in ▁the ▁battle ▁and ▁often ▁engaged ▁in ▁counter - inf antry ▁and ▁counter - b atter y ▁work ▁with ▁the ▁help ▁of ▁German ▁reconna issance ▁plan es . ▁By ▁the ▁end ▁of ▁the ▁day ▁the ▁Al lied ▁art illery ▁once ▁again ▁reduced ▁the ▁intensity ▁of ▁its ▁fire . ▁ ▁In ▁the ▁morning ▁on ▁