▁Military ▁Int elligence ) ▁also ▁reported ▁German ▁tro op ▁movements ▁from ▁east ▁to ▁west , ▁which ▁led ▁J off re ▁to ▁continue ▁the ▁transfer ▁of ▁French ▁troops ▁from ▁the ▁east , ▁which ▁had ▁begun ▁on ▁ 2 ▁September ▁with ▁the ▁IV ▁Corps ▁and ▁continued ▁on ▁ 9 ▁September ▁with ▁the ▁XX ▁Corps , ▁ 1 1 ▁September ▁with ▁the ▁XIII ▁Corps ▁and ▁the ▁XIV ▁Corps ▁on ▁ 1 8 ▁September . ▁The ▁de ple tion ▁of ▁the ▁French ▁forces ▁in ▁the ▁east , ▁took ▁place ▁just ▁before ▁the ▁Battle ▁of ▁F li rey , ▁a ▁German ▁attack ▁on ▁ 2 0 ▁September ▁against ▁the ▁Third ▁Army ▁on ▁either ▁side ▁of ▁Verd un , ▁the ▁Fif th ▁Army ▁north ▁of ▁Re ims ▁and ▁the ▁Six th ▁Army ▁along ▁the ▁A is ne , ▁which ▁ended ▁with ▁the ▁creation ▁of ▁the ▁St . ▁Mih iel ▁Sal ient . ▁J off re ▁maintained ▁the ▁French ▁emphas is ▁on ▁the ▁western ▁fl ank , ▁after ▁receiving ▁intercept ed ▁wireless ▁messages , ▁showing ▁that ▁the ▁Germ ans ▁were ▁moving ▁an ▁army ▁to ▁the ▁western ▁fl ank ▁and ▁continued ▁to ▁assemble ▁the ▁Second ▁Army ▁to ▁the ▁north ▁of ▁the ▁Six th ▁Army . ▁On ▁ 2 4 ▁September ▁the ▁Second ▁Army ▁was ▁attacked ▁and ▁found ▁difficulty ▁in ▁holding ▁ground , ▁rather ▁than ▁adv ancing ▁round ▁the ▁German ▁fl ank ▁as ▁intended . ▁ ▁Battle ▁ ▁First ▁phase , ▁ 2 5 ▁September ▁– ▁ 4 ▁October ▁ ▁Battle ▁of ▁Pic ard y , ▁ 2 2 – 2 6