In the weeks and months that followed the German defeat at the Marne, allied understanding of the actual nature of the war developed only slowly. Until the coming of spring and the British failure to get men or munitions, the French and the British public, and probably their soldiers, believed that the Germans were shortly to be turned out of France. But with the failure there was at last established the real situation, the war had taken on the character of our own Civil War, it had become a struggle in which the decision would follow the exhaustion of one of the contending forces and the incidental victories of either side could not contribute materially to the ending of the war. In the Civil War the North was exceedingly slow in learning this lesson and it was not until General Grant at last assumed the command of all the Northern armies that an intelligent policy was adopted. This policy has been summarized as the policy of attrition and it is now generally recognized as the policy on which the enemies of the Central Powers rely for ultimate success. Grant's own statement of this policy was as follows: "To hammer continuously against the armed force of the enemy and his resources, until by mere attrition, if in no other way, there should be left to him nothing but submission." By this policy Grant won his war. Now the allied policy, which it is necessary to recognize, to understand the war as it is viewed by one of the two contending forces, is this: The Allies are satisfied that the German numbers have begun or are beginning to fail. They fix at around 8,000,000 the total man power of Germany at the outset, using all means of computation including their own experience. They figure that at the end of the first eighteen months Germany had lost permanently not less than 3,500,000, possibly 4,000,000. They know that it requires upwards of 3,000,000 men to hold Germany's present lines and about 1,000,000 to perform other necessary services. Now no such wastage has to be faced by the Allies as a whole. France is in the German situation, but Great Britain is still possessed of large numbers of men and her losses are under 600,000, while her population together with that of her colonies is above 60,000,000, whites alone being considered, against Germany's 67,000,000. Russia's man power is practically limited only by the ability to equip and munition. Italy has, as yet, made little draft upon her resources. Austria, on the other hand, has suffered more heavily, proportionately figured, than Germany.