"The puzzle is why [France's] heavy losses did not lead to a complete collapse - as had happened in 1870 and would happen again in 1940. Some credit must certainly go to the imperturbable French Commander-in-Chief Joseph Joffre, and particularly to his ruthless purge of senescent or incompetent French commanders as the crisis unfolded. Fundamentally, however, time was against Moltke for the simple reason that the French could redeploy more swiftly than the Germans could advance once they had left their troop trains. On August 23 the three German armies on Moltke's right wing constituted twenty-four divisions, facing just seventeen and a half Entente divisions; by September 6 they were up against forty-one. The chance of a decisive victory was gone, if it had ever existed. At the Marne, the failure of Moltke's gamble was laid bare. He himself suffered a nervous breakdown."