On 18 September, the French advance was stopped on a south-east to north-west line at Carlepont on the south bank of the Oise and Noyon on the north bank, which ended the first French outflanking move.
On 21 September, Falkenhayn met Bülow and agreed that the 6th Army should concentrate close to Amiens and attack towards the Channel coast and then envelop the French south of the Somme in a (decisive battle).