The effectiveness of this far-reaching organization was revealed in the complete absence of those disturbances which had been feared. At the outbreak of war, troops had been located at bridges and important public works, but the thorough manner in which the League ferreted out those who were willing to foment trouble soon rendered unnecessary the guarding of industrial plants by soldiers or police. There were no interruptions to the enormous output of munitions and manufactured material, nor were there any accidents, explosions or labor troubles traced to agents of the enemy. In the Pittsburgh division alone, over 25,000 cases were investigated, and every person upon whom the least suspicion had been cast was soon rendered powerless to do harm. Every effort was made to eliminate troubles by preventing alien sympathizers from perfecting their plans. No meetings where incendiary talk could be fostered were permitted to continue, and it was not long before those who had trouble in mind realized that to continue their purpose would only lead to their own downfall and also that of their followers. The record of the League is a tribute to the wisdom of this preventive policy. It was feared that because of the large proportion of foreigners in the Pittsburgh district, the wide diversity of languages spoken, and the great illiteracy among certain of the nationalities, there would be great difficulty in securing proper observance of the Selective Service registration regulations. During the Civil War, there had been serious draft riots in Pittsburgh, when the percentage of foreigners and of illiteracy was much less. The American Protective League, in coöperation with Mr. Judge, gave the widest publicity in every possible way to the plans for the registration and the penalty for failure to comply. The result of this work of preparation was that the registration was effected without disorder, and there were no occasions for wholesale arrests to bring evaders or possible evaders to justice. In fact, the League’s policy was to prevent trouble by advising those inclined to resent the Government’s call, and to make no arrests until other means failed. It was only necessary for an American Protective League operative to appear in open court on one occasion. I. W. W. propaganda was never permitted to take root. Work to eliminate this menace occupied a large amount of the League’s attention. A well organized scheme of the Socialists to evade the Selective Service Law was broken up when a prominent radical and anarchist, a ringleader in the movement, was taken from a meeting he was about to address and compelled to register. The facts that the plans of the scheme were so well known to the League cooled the ardor of the malcontents.