The prime source of the present immense disaster in Europe is the desire on the part of Germany for world empire, a desire which one European nation after another has made its supreme motive, and none that has once adopted it has ever completely eradicated. Germany arrived late at this desire, being prevented until 1870 from indulging it, because of her lack of unity, or rather because of being divided since the Thirty Years' War into a large number of separate, more or less independent, States. When this disease, which has attacked one nation after another through all historic times, struck Germany it exhibited in her case a remarkable malignity, moving her to expansion in Europe by force of arms, and to the seizure of areas for colonization in many parts of the world. Prussia, indeed, had long believed in making her way in Europe by fighting, and had repeatedly acted on that belief. Shortly before the achievement of German unity by Bismarck she had obtained by war in 1864 and 1866 important accessions of territory and leadership in all Germany. With this desire for world empire went the belief that it was only to be obtained by force of arms. Therefore, united Germany has labored with utmost intelligence and energy to prepare the most powerful army in the world, and to equip it for instant action in the most perfect manner which science and eager invasion could contrive. To develop this supreme military machine universal conscription--an outgrowth of the conception of the citizens' army of France during the Revolution--was necessary; so that every young man in Germany physically competent to bear arms might receive the training of a soldier, whether he wished it or not, and remain at the call of the Government for military duty during all his years of competency, even if he were the only son of a widow, or a widower with little children, or the sole support of a family or other dependents. In order to the completeness of this military ideal the army became the nation and the nation became the army to a degree which had never before been realized in either the savage or the civilized world. This army could be summoned and put in play by the Chief Executive of the German Nation with no preliminaries except the consent of the hereditary heads of the several States which united to form the empire in 1870-71 under the domination of Prussia, the Prussian King, become German Emperor, being Commander in Chief of the German Army. At the word of the Emperor this army can be summoned, collected, clothed, equipped and armed, and set in motion toward any frontier in a day. The German Army was thus made the largest in proportion to population, the best equipped, and the most mobile in the world. The German General Staff studied incessantly and thoroughly plans for campaigns against all the other principal States of Europe, and promptly utilized--secretly, whenever secrecy was possible--all promising inventions in explosives,