Foch showed that a well-organised battle could be fought in a manner which was "not unduly costly" but that the Allies had not accumulated enough resources to defeat decisively the Germans. In September, Foch had managed to get the four Entente armies on the Somme to make co-ordinated attacks, which brought the Germans close to collapse. In October, the autumn rains soaked the ground and slowed the tempo of attacks, which resembled the (nibbling) of late July and August. Such smaller, un-coordinated attacks could depress German morale but not deplete manpower at the rate achieved in September. The systems of organisation and supply to maintain long offensives were not adequate to deliver the vast amounts of food, ammunition and equipment needed by million-man armies, even over the pre-war infrastructure of northern France. A reorganisation was begun, using light railways to link railheads to the armies but this change did not mature until 1917 and became part of a cycle of initiative and response by the belligerents, which continued the battlefield equilibrium.