3 rd ▁B n ▁making ▁a ▁mock ▁attack ▁as ▁a ▁di version . ▁Ass emb ling ▁the ▁attack ers ▁in ▁the ▁thick ▁mud ▁and ▁darkness ▁caused ▁problems , ▁but ▁the ▁assault ▁went ▁in ▁at ▁ 0 5 . 4 0 ▁behind ▁an ▁inten se ▁cre eping ▁bar rage . ▁Only ▁at ▁Sch uler ▁Farm , ▁where ▁the ▁supporting ▁t anks ▁were ▁bog ged ▁down ▁and ▁the ▁attack ing ▁pl ato on ▁was ▁almost ▁w ip ed ▁out , ▁did ▁the ▁attack ▁fail . ▁The ▁batt alion ▁was ▁on ▁its ▁other ▁object ives ▁within ▁half ▁an ▁hour , ▁but ▁cas ual ties ▁from ▁shell fire ▁had ▁been ▁severe , ▁and ▁a ▁company ▁of ▁ 2 / 3 rd ▁B n ▁was ▁sent ▁to ▁thick en ▁up ▁the ▁line . ▁Similarly , ▁British ▁shell fire ▁broke ▁up ▁a ▁German ▁counter - att ack , ▁and ▁Sch uler ▁Farm ▁was ▁ev acu ated , ▁so ▁that ▁the ▁planned ▁follow - up ▁attack ▁by ▁ 2 / 3 rd ▁B n ▁became ▁unnecessary . ▁ 2 / 2 nd ▁Battalion ▁took ▁over ▁the ▁line , ▁cons olid ated , ▁and ▁brought ▁in ▁wounded ▁until ▁the ▁brig ade ▁was ▁rel ieved ▁during ▁the ▁night ▁of ▁ 2 0 / 2 1 ▁September . ▁Although ▁ 5 8 th ▁Division ▁participated ▁in ▁the ▁Battle ▁of ▁Pol ygon ▁Wood ▁( 2 6 ▁September ), ▁ 1 7 3 rd ▁B de ▁was ▁not ▁engaged ▁( though ▁ 2 / 2 nd ▁B n ▁helped ▁ 1 7 5 th ▁B