The Battle of La Malmaison (Bataille de la Malmaison) from 23 to 27 October, was the final French action of the 1917 campaign in the First World War, which had begun with the Nivelle Offensive. The French captured the village and fort of La Malmaison and took control of the Chemin des Dames ridge. The German 7th Army (General Max von Boehn) had discovered French preparations for the attack and also identified the date and time. Boehn chose to defend the front positions, rather than treat them as an advanced zone and to conduct the main defence north of the Oise–Aisne Canal. The German artillery was outnumbered three-to-one and on the front of the 14th Division, 32 German batteries were confronted by 125 French, which silenced most of the German guns before the attack. Gas from French bomba