ensive . ▁ ▁The ▁German ▁II ▁Bav arian ▁and ▁XIV ▁Reserve ▁corps ▁pushed ▁back ▁a ▁French ▁Territ orial ▁division ▁from ▁B apa ume ▁and ▁advanced ▁towards ▁B ray - sur - S om me ▁and ▁Albert . ▁From ▁ ▁the ▁French ▁XX I ▁and ▁X ▁Corps ▁north ▁of ▁the ▁Som me , ▁with ▁support ▁on ▁the ▁right ▁fl ank ▁by ▁the ▁ 8 1 st , ▁ 8 2 nd , ▁ 8 4 th ▁and ▁ 8 8 th ▁Territ orial ▁divisions ▁and ▁the ▁ 1 st , ▁ 3 rd , ▁ 5 th ▁and ▁ 1 0 th ▁Caval ry ▁divisions ▁of ▁the ▁French ▁II ▁Caval ry ▁Corps , ▁def ended ▁the ▁approaches ▁to ▁Albert . ▁On ▁ 2 8 ▁September , ▁the ▁French ▁were ▁able ▁to ▁stop ▁the ▁German ▁advance ▁on ▁a ▁line ▁from ▁Mar ic ourt ▁to ▁F ric ourt ▁and ▁Th ie p val . ▁The ▁German ▁II ▁Caval ry ▁Corps ▁was ▁stopped ▁near ▁Ar ras ▁by ▁the ▁French ▁caval ry . ▁On ▁ 2 9 ▁September , ▁J off re ▁added ▁X ▁Corps , ▁ ▁north ▁of ▁Am iens , ▁to ▁the ▁French ▁II ▁Caval ry ▁Corps ▁south - east ▁of ▁Ar ras ▁and ▁a ▁prov is ional ▁corps ▁( General ▁Victor ▁d ' U r bal ), ▁which ▁had ▁a ▁Reserve ▁division ▁in ▁Ar ras ▁and ▁one ▁in ▁L ens , ▁to ▁a ▁new ▁T enth ▁Army . ▁ ▁Second ▁phase ▁ 4 – 1 5 ▁October ▁ ▁First ▁Battle ▁of ▁Ar ras , ▁