▁their ▁right ▁fl ank . ▁This ▁ ▁obliged ▁them ▁to ▁fall ▁back ▁to ▁their ▁own ▁starting ▁tren ches . ▁By ▁this ▁time ▁the ▁total ▁losses ▁of ▁the ▁I v rea ▁Brigade ( 1 6 1 st ▁and ▁ 1 6 2 nd ▁reg iments ) ▁were ▁ 4 0 ▁officers ▁and ▁around ▁ 1 0 0 0 ▁soldiers . ▁ ▁Thus ▁the ▁first ▁assault ▁on ▁the ▁Bulgar ian ▁and ▁German ▁positions ▁ended ▁in ▁almost ▁complete ▁failure . ▁General ▁P enn ella ▁ordered ▁the ▁attack ▁to ▁be ▁res umed ▁with ▁the ▁help ▁of ▁the ▁divis ional ▁art illery . ▁At ▁ 9 : 4 5 ▁the ▁Italian ▁inf antry men ▁once ▁again ▁moved ▁forward ▁but ▁as ▁conditions ▁hadn ' t ▁improved ▁in ▁their ▁favor , ▁they ▁achieved ▁no ▁better ▁success ▁and ▁once ▁again ▁suffered ▁heavy ▁losses . ▁By ▁m idd ay ▁the ▁attack ▁had ▁died ▁off ▁and ▁General ▁P enn ella ▁post pon ed ▁it . ▁By ▁the ▁end ▁of ▁the ▁day ▁the ▁It ali ans ▁had ▁lost ▁between ▁ 2 , 4 0 0 ▁and ▁ 2 7 0 0 ▁men , ▁which ▁amount ed ▁to ▁about ▁ 2 1 % ▁of ▁the ▁committed ▁inf antry . ▁One ▁Italian ▁observation ▁bal lo on ▁was ▁also ▁lost . ▁During ▁the ▁inf antry ▁attack ▁on ▁ 9 ▁of ▁May ▁the ▁Al lied ▁art illery ▁in ▁the ▁Italian ▁sector ▁fired ▁ 3 1 , 2 3 5 ▁shell s ▁against ▁the ▁def enders . ▁ ▁The ▁assault ▁in ▁the ▁French ▁sector ▁ ▁The ▁ 1 6