One or the other of her Continental enemies must not only be defeated, but crushed and eliminated from the conflict before the other could mobilize against her. One of them, Russia, would probably take the longer time to effect her mobilization. Russia had started, it is true, before war was declared. But interior railroads in Russia are few. Russia, too, is proverbially slow, if for no other reason than by virtue of her ponderous numbers. France, on the other hand, is checked and counter-checked by good strategic railroads, and, having no such vast territory over which her troops would have to be moved, would be able to mobilize in a much shorter time than her ally. England, for a few weeks at least, could be disregarded. Deceived as to the extent of Russian unpreparedness and believing that Russia's slowness would prevent an active offense for some weeks, Germany selected France as her first objective, and took immediate steps to hurl twenty-four army corps across the French border at various points, aiming at Paris. These twenty-four corps were divided into three armies--the Army of the Meuse, based on Cologne; the Army of the Moselle, based on Metz and Coblenz, and the Army of the Rhine, based on Strassburg. All of these three armies were naturally to converge on Paris. The route of the Army of the Meuse would pass through Liege, Namur, and Maubeuge, and would therefore have to cross a part of Belgium; the Army of the Moselle would take a route through Sedan and Soissons, passing north of the Verdun fortress, but of necessity crossing the Duchy of Luxemburg; the Army of the Rhine, after crossing the screen of the Vosges Mountains, would pass through Nancy and Toul, between the fortresses of Epinal and Belfort. It is obvious that the march to Paris would be most quickly achieved through the flat country of Belgium, where the French frontier is practically unguarded and only the weakly manned barrier fortresses of Belgium barred the way. The remainder of the French frontier from Luxemburg to Switzerland was well fortified, and Germany had no time to spend in reducing fortified places. [Illustration: THOMAS A. EDISON The American Inventor, Now Associated With the Navy Department as Chief of the Advisory Board of Civilian Inventors and Engineers] [Illustration: HUDSON MAXIM American Inventor of High Explosives and Other Materials of War (_Photo by White._)]