During the first weeks of the war a German press bureau was established in New York for the distribution of pro-German literature and the support of the German-American press. Its activities were chiefly directed by Dr. Bernhard Dernburg, who defended Germany from the charge of responsibility for the war and expatiated upon her efficiency and the beneficence of her culture in the same breath that he attacked the commercial greed of Great Britain, the cruel autocracy of Russia, and the imperialistic designs of Japan in the Pacific. Its pamphlets went so far as to excoriate allied methods of warfare and to level accusations of inhumanity against the Belgians. It distributed broadcast throughout the country an appeal signed by ninety-three German professors and intellectuals, and countersigned by a few notable Americans, which besought the American people not to be deceived by the "lies and calumnies" of the enemies of Germany.

This propaganda left all cold except those who already sympathized with Germany. Indeed it reacted unfavorably against the German cause, as soon as the well-authenticated reports came of German atrocities in Belgium, of the burning of the Louvain library, and of the shelling of Rheims cathedral. The efforts of German agents then shifted, concentrating in an attack upon the United States Government for its alleged unneutral attitude in permitting the export of munitions to the Entente. In some sections of the country they were able to arouse an opinion favorable to the establishment of an embargo. In the Senate, on December 10, 1914, a bill was offered by John D. Works of California providing for the prohibition of the sale of war supplies to any belligerent nation and a similar bill was fathered in the House by Charles L. Bartlett of Georgia. These efforts were warmly supported by various associations, some of which were admittedly German-American societies, although the majority attempted to conceal their partisan feeling under such titles as American Independence Union and American Neutrality League. The latter effectively displayed its interest in America and in neutrality by tumultuous singing of Deutschland über Alles and Die Wacht am Rhein. Of sincerely pacifist organizations there were not a few, among which should not be forgotten the fantastic effort of Henry Ford in December, 1915, to end the war by sending a "Peace Ship" to Europe, designed to arouse such public opinion abroad in favor of peace that "the boys would be out of the trenches by Christmas." The ship sailed, but the expedition, which was characterized by equal amounts of honesty and foolishness, broke up shortly in dissension. For the most part pacifism and pro-Germanism went hand in hand—a tragic alliance of good and evil which was to hamper later efforts to evolve an international organization for the preservation of peace.

The attempts of German propagandists to influence the policy of the Government met, as we have seen, the stubborn resolve of the President not to favor one camp of the belligerents by a departure from international custom and law during the progress of the war. Their efforts, however, were not entirely relaxed. Appeals were made to workmen to stop the war by refusing to manufacture munitions; vigorous campaigns were conducted to discredit the Administration by creating the belief that it was discriminating in favor of the British. But more and more Germany took to secret intrigue, the strings of which were pulled by the military and naval attachés, von Papen and Boy-Ed. The German Ambassador, von Bernstorff, also took a lively interest in the plans to control public opinion and later to hamper munitions production. With his approval, German manufacturing companies were organized at Bridgeport and elsewhere to buy up the machinery and supplies essential to the production of powder, shrapnel, and surplus benzol; arrangements were made with the Bosch Magneto Company to enter into contracts with the Entente for fuses and at the last moment to refuse to complete the contract. Von Bernstorff was careful to avoid active participation in plots for the destruction of property; but his interest and complicity, together with that of Dr. Heinrich F. Albert, Financial Adviser of the German Embassy, are evidenced by the checks drawn on their joint account and paid to convicted criminals.

One of the first of the plots was the attempted blowing up of the international bridge at Vanceboro, Maine, on December 31, 1914. The materials for this explosion were collected and the fuse set by a German reservist lieutenant, Werner Horn, who admitted that he acted under the orders of von Papen. Another plan of the German agents was the destruction of the Welland Canal, which was entrusted to a brilliant and erratic adventurer, von der Goltz, who later confessed that he was under the supervision of von Papen and had secured his materials from Captain Hans Tauscher, the agent in New York of the Hamburg-American Line. This company was involved in securing false manifests for vessels that carried coal and supplies to German cruisers, thus defrauding the United States, and in obtaining false passports for German reservists and agents; it acted, in fact, as an American branch of the German Admiralty. More serious yet was an attempt of the naval attaché, Boy-Ed, to involve the United States and Mexico in a dispute by a plot to bring back Huerta. This unhappy Mexican leader was arrested on the Mexican border in June, 1915, and shortly afterwards died.

For some months the existence of such activities on the part of German agents had been suspected by the public. A series of disclosures followed. In July, 1915, Dr. Albert, while riding on a New York elevated train, was so careless as to set his portfolio on the seat for a few moments; it was speedily picked up by a fellow passenger who made a hasty exit. Soon afterwards the chief contents of the portfolio were published. They indicated the complicity of the German Embassy in different attempts to control the American press and to influence public opinion, and proved the energy of less notable agents in illegal undertakings. Towards the end of August, the Austrian Ambassador, Dr. Constantin Dumba, made use of an American correspondent, James F. J. Archibald by name, to carry dispatches to the Central Empires. He was arrested by the British authorities at Falmouth, and his effects proved Dumba's interest in plans to organize strikes in American munitions plants. "It is my impression," wrote the Austrian Ambassador, "that we can disorganize and hold up for months, if not entirely prevent, the manufacture of munitions in Bethlehem and the Middle West, which in the opinion of the German military attaché, is of great importance and amply outweighs the expenditure of money involved." Archibald also carried a letter from von Papen to his wife in which he wrote: "I always say to these idiotic Yankees that they had better hold their tongues." Its publication did not serve to allay the warmth of American feeling.

It was with great satisfaction, therefore, that the public learned in September that President Wilson had requested the recall of Ambassador Dumba in the following words: "By reason of the admitted purpose and intent of Ambassador Dumba to conspire to cripple legitimate industries of the people of the United States and to interrupt their legitimate trade, and by reason of the flagrant diplomatic impropriety in employing an American citizen protected by an American passport, as a secret bearer of official despatches through the lines of the enemy of Austria-Hungary.... Mr. Dumba is no longer acceptable to the Government of the United States." The two German attachés were given a longer shrift, but on the 30th of November von Bernstorff was told that they were no longer acceptable; von Papen sailed on the 22d of December and was followed a week later by Boy-Ed.

During the two preceding months there had been a constant series of strikes and explosions in munitions plants and industrial works, and public opinion was now thoroughly aroused. The feeling that Germany and Austria were thus through their agents virtually carrying on warfare in the United States was intensified by the revelations of Dr. Joseph Goričar, formerly an Austrian consul, but a Jugoslav who sympathized with the Entente; according to his statement every Austrian consul in the country was "a center of intrigue of the most criminal character." His charges came at the moment when Americans were reading that the number of strikes in munitions plants was unparalleled, no less than one hundred and two in a few months, of which fifty were in Bridgeport, which was known to be a center of German activities. Explosions and fires at the plants of the Bethlehem Steel Company and the Baldwin Locomotive Works, and at the Roebling wire-rope shop in Trenton were of mysterious origin.

To what extent explosions in munitions plants were the result of German incendiarism and not of an accidental nature, it is difficult to determine. But the Department of Justice was so thoroughly convinced of the far-reaching character of German plots that President Wilson, in his annual message of December, 1915, frankly denounced the "hyphenates" who lent their aid to such intrigues. "I am sorry to say that the gravest threats against our national peace and safety have been uttered within our own borders. There are citizens of the United States ... who have poured the poison of disloyalty into the very arteries of our national life; who have sought to bring the authority and good name of our Government into contempt, to destroy our industries wherever they thought it effective for their vindictive purposes to strike at them, and to debase our politics to the uses of foreign intrigue." His attack drew forth the bitter resentment of the foreign language press, but was hailed with delight in the East, where German intrigues aroused as great excitement against the Fatherland as the submarine campaign. Nor was it calmed by the continuance of fires and explosions and the evident complicity of German officials. During the spring of 1916 a German agent, von Igel, who occupied the former offices of von Papen, was arrested, and the activities of Franz von Rintelen, who had placed incendiary bombs on vessels leaving New York with food and supplies for the Allies, were published. Taken in conjunction with the sinking of the Sussex, German plots were now stimulating the American people to a keen sense of their interest in the war, and preparing them effectively for a new attitude toward foreign affairs in general.

It was inevitable that such revelations should have created a widespread demand for increased military efficiency. The nation was approaching the point where force might become necessary, and yet it was in no way prepared for warfare, either on land or sea. During the first months of the war the helplessness of the United States had been laid bare by General Leonard Wood, who declared that we had never fought a really first-class nation and "were pitifully unprepared, should such a calamity be thrust upon us." The regular army "available to face such a crisis" would be "just about equal to the police forces of Boston, New York, and Philadelphia." The "preparedness movement" thus inaugurated was crystallized by the formation of the National Security League, designed to organize citizens in such a way "as may make practical an intelligent expression of public opinion and may ensure for the nation an adequate system of national defense." Pacifists and pro-Germans immediately organized in opposition; and the movement was hampered by President Wilson's unwillingness to coöperate in any way. He was flatly opposed, in the autumn of 1914 and the spring of the following year, to compulsory military service: "We will not ask our young men to spend the best years of their lives making soldiers of themselves." He insisted that the American people had always been able to defend themselves and should be able to continue to do so without altering their military traditions. It must not be forgotten that at this time Wilson still believed in absolute isolation and refused to consider force as an element in our foreign policy. His attitude was sufficient to render fruitless various resolutions presented by Congressman Augustus P. Gardner and Senator George E. Chamberlain, who proposed improvements in the military system. Congress was pacifically-minded. This was the time when many Congressmen were advocating an embargo on arms, and so far from desiring to learn how to make and use munitions of war they concentrated their efforts on methods of preventing their export to the Allies.

The preparedness movement, none the less, spread through the country and the influence of the National Security League did much to inform the public. In the summer of 1915 there was organized at Plattsburg, New York, under the authority of General Wood, a civilian camp designed to give some experience in the rudiments of military science. It was not encouraged by the Administration, but at the end of the year the President himself confessed that he had been converted. He was about to abandon his policy of isolation for his new ideal of international service, and he realized the logical necessity of supporting it by at least a show of force. Mere negative "neutrality" no longer sufficed. His fear that greater military strength might lead to an aggressive spirit in the country had been obliterated by the attacks of submarines and by the German plots. He admitted frankly that he had changed his mind. "I would be ashamed," he said, "if I had not learned something in fourteen months." To the surprise of many who had counted upon his pacific tendencies to the end, he did what he had not heretofore done for any of his policies; he left his desk in Washington and took to the platform.