It may some day be regarded as one of the chief merits of the Wilson Administration that it was not affected by this popular delusion. While a large part of the people seemed to expect a cheap and speedy victory by some sort of white magic, the Administration was getting ready to work for victory. And thanks largely to the unity which had been bought by the President's caution in the two previous years, Congress and the people assented to measures of exertion and self-denial such as no man could have expected America to undertake until compelled by bitter experience. The first step was the dispatch of American naval forces to aid the Allies in the fight against the submarines, which for a few months were to come dangerously near justifying the confidence that had been placed in them. The process of naval reinforcement was slow, and not till 1918 did the American Navy become a really important factor in the anti-submarine campaign; but every destroyer added to the allied forces was of immediate value. The American Treasury was opened for vast credits to the Allies, who by their enormous purchases of war materials in the United States had created the abounding prosperity of 1916, and had pretty nearly exhausted their own finances in doing so. More than that, the Administration began at once to prepare for the organization of a vast army; and faced with this most important duty of the conduct of the war, the President took the advice of the men who knew. The army officers knew that if America were to take a serious part in the war the regular army and the National Guard would not be enough, nor even Garrison's Continental Army which had been rejected in 1916. A big army would be needed, and the right way to raise it was by conscription. So the Selective Service act was introduced in Congress and passed in May, without very serious opposition. At the very start the American people had accepted a principle which had been adopted in the crisis of the Civil War only after two years of disaster and humiliation. It was the estimate of experts that this army would need a year of training before it would be fit for the front line, and a huge system of cantonments was hastily constructed to house the troops, while the nucleus of men trained in the Plattsburg camps was increased by the extension of the Plattsburg system all over the country. For the leadership of this army General Pershing was selected, not without considerable criticism from those who thought General Wood deserved the position. The reasons which led to the selection of Pershing are not yet officially known to the public, but Pershing's record was to be a sufficient justification of the appointment.