The main Allied effort on the Western Front is taking place at Ypres, where British-led forces are battling the Germans and mud. The French are playing a supporting role in that battle, but they are also carrying out their own offensives elsewhere. In the Chemin des Dames sector over the last few days they have been carrying out a local offensive with limited objectives. Advancing behind a creeping barrage, French troops managed to seize the German-held village of La Malmaison, despite the failure of many of their tanks in the soft ground. German counter-attacks have failed to dislodge the French, who have been able to advance further in the following days. French casualties were not light but appear to have been greatly exceeded by those of the enemy.
For the French commanders this limited success is a further indication that the dark days of the mutinies are now behind the French army. For the Germans meanwhile the battle is disconcerting. They begin to plan a withdrawal to more readily defended positions. Ludendorff also decides that the aggressive French posture means that it would be foolhardy for him to send more men to exploit the recent successes at Caporetto on the Italian front.
French troops after the battle (La Croix: 1917 Année cruelle, année charnière)
map (Wikipedia: Battle of La Malmaison)