The fourth phase of Ludendorff‘s offensive sees the Germans attacking French forces between the tips of the salients created by the first and third assaults. Initial gains were promising but progress then slowed, much more quickly than in previous battles, thanks to exhaustion on the part of the stormtroopers and improvements in the Allies’ tactics.
Today sees the French counterattack in strength. The French hit the Germans with four infantry divisions and large numbers of the new Renault FT tanks. The momentum of the German assault is broken; when news of the failure reaches Ludendorff he has no option but to halt this phase of the fighting. But he is not throwing in the towel yet. Instead he ponders where to land the next blow, knowing that he must win victory soon or Germany will inevitably be defeated.