▁IV ▁Caval ry ▁Corps ▁from ▁Val enci ennes ▁to ▁L ille . ▁From ▁ ▁German ▁attacks ▁on ▁Ar ras ▁and ▁the ▁vic inity ▁were ▁cost ly ▁fail ures . ▁On ▁ 4 ▁October , ▁German ▁troops ▁entered ▁L ens , ▁Sou chez , ▁Ne uv ille - Saint - V a ast ▁and ▁gained ▁a ▁foot ing ▁on ▁the ▁Lor ette ▁Sp ur . ▁German ▁attacks ▁were ▁made ▁from ▁the ▁north ▁of ▁Ar ras ▁to ▁reach ▁the ▁Sc ar pe ▁but ▁were ▁eventually ▁rep uls ed ▁by ▁X ▁Corps . ▁By ▁ 4 ▁October , ▁German ▁troops ▁had ▁also ▁reached ▁Given chy - en - G oh elle ▁and ▁on ▁the ▁right ▁fl ank ▁of ▁the ▁French ▁further ▁south , ▁the ▁Territ orial ▁divisions ▁were ▁separated ▁from ▁X ▁Corps , ▁prompt ing ▁Cast eln au ▁and ▁Ma ud ' hu y ▁to ▁recommend ▁a ▁retre at . ▁J off re ▁made ▁Ma ud ' hu y ' s ▁ ▁independent ▁as ▁the ▁T enth ▁Army ▁and ▁told ▁Cast eln au ▁to ▁keep ▁the ▁Second ▁Army ▁in ▁position , ▁because ▁the ▁increasing ▁number ▁of ▁troops ▁arriv ing ▁further ▁north ▁would ▁di vert ▁German ▁pressure . ▁ ▁By ▁ 6 ▁October , ▁the ▁Second ▁Army ▁front ▁from ▁the ▁O ise ▁to ▁the ▁Som me ▁and ▁the ▁T enth ▁Army ▁front ▁from ▁Th ie p val ▁to ▁Ar ras ▁and ▁Sou chez ▁had ▁been ▁stabil ised . ▁A ▁German ▁caval ry ▁attack ▁to ▁the ▁north ▁of ▁the ▁ 6 th ▁Army , ▁pushed ▁back ▁the ▁French