1 – 4 ▁October ▁ ▁On ▁ 1 ▁October , ▁the ▁French ▁at ▁Ar ras ▁were ▁pushed ▁back ▁from ▁Gu éma ppe , ▁W anc ourt ▁and ▁Mon chy - le - Pre ux , ▁until ▁the ▁arrival ▁of ▁X ▁Corps . ▁By ▁ 1 ▁October , ▁two ▁more ▁French ▁corps , ▁three ▁inf antry ▁and ▁two ▁caval ry ▁divisions ▁had ▁been ▁sent ▁north wards ▁to ▁Am iens , ▁Ar ras , ▁L ens ▁and ▁L ille , ▁which ▁increased ▁the ▁Second ▁Army ▁to ▁eight ▁corps , ▁along ▁a ▁front ▁of ▁. ▁J off re ▁ordered ▁Cast eln au ▁to ▁operate ▁def ens ively , ▁while ▁Ma ud ' hu y ▁and ▁the ▁ ▁advanced ▁on ▁Ar ras . ▁On ▁ 2 8 ▁September , ▁Fal ken h ay n ▁had ▁ordered ▁the ▁ 6 th ▁Army ▁to ▁conduct ▁an ▁off ensive ▁by ▁the ▁IV , ▁Guard ▁and ▁I ▁Bav arian ▁corps ▁near ▁Ar ras ▁and ▁more ▁off ens ives ▁further ▁north . ▁Ru pp recht ▁intended ▁to ▁halt ▁the ▁French ▁west ▁of ▁Ar ras ▁and ▁en velop ▁them ▁around ▁the ▁north ▁side ▁of ▁the ▁city . ▁On ▁ 1 ▁October , ▁the ▁French ▁attacked ▁to ▁the ▁south - east , ▁expecting ▁only ▁by ▁a ▁caval ry ▁screen . ▁ ▁The ▁Germ ans ▁attacked ▁from ▁Ar ras ▁to ▁Dou ai ▁on ▁ 1 ▁October , ▁forest alling ▁the ▁French . ▁On ▁ 3 ▁October , ▁Ru pp recht ▁rein for ced ▁the ▁ 6 th ▁Army ▁north ▁of ▁Ar ras ▁and ▁ordered ▁the