The main offensive was to be delivered Military_operation by the French on the Chemin des Dames ridge ( the Second Battle of the Aisne , , and ) , with a subsidiary attack by the Fourth Army ( Third Battle of Champagne , Battle of the Hills , Battle of the Hills of Champagne ) .

Fighting known as the Battle of the Observatories continued for local advantage all summer on the Chemin des Dames and along the Moronvilliers heights east of Reims .

In late October , the French conducted Action the Battle of La Malmaison ( 23–27 October ) , a limited-objective attack on the west end of the Chemin-des-Dames , which forced Causation the Germans to abandon GiveUp their remaining positions on Chemin des Dames and retire Escaping across the Ailette valley .