2. The next thing that strikes one is the position of the neutral countries. Supposing Belgium to have remained neutral, or, rather, to have allowed German armies to pass over her soil without actively resisting, the Germanic body would have been free to trade with neutral countries, and to receive support from their commerce, and to get goods through them over the whole of their western front, with the exception of the tiny section which stands for the frontier common to France and Germany. On the north, supposing the Baltic to be open, the Germanic body had a vast open frontier of hundreds of miles, and though Russia closed most of the eastern side, all the Roumanian frontier was open, and so was the frontier of the Adriatic, right away from the Italian border to Cattaro. So was the Swiss frontier and the Italian. [Illustration: Sketch 5.] Indeed, if we draw the Germanic body by itself surrounded by a frontier of dots, as in the accompanying sketch, and mark in a thick line upon that frontier those parts which touched on enemy's territory, and were therefore closed to supply, we shall be immediately arrested by the comparatively small proportion of that frontier which is thus closed. [Illustration: Sketch 6.] It is well to carry this in mind during the remainder of our study of this war, because it has a great effect upon the fighting power of Germany and Austria after a partial--but very partial--blockade is established by the Allied and especially by the British naval power. 3. The third thing that strikes one in such a map of the belligerent area is the way in which the Germanic body stands in the middle facing its two groups of enemies East and West. _The Geographical Advantages and Disadvantages of the Germanic Body_. With this last point we can begin a comparison of the advantages and disadvantages imposed by geographical conditions upon the two opponents, and first of these we will consider the geographical advantages and disadvantages of the Germanic body--that is, of the Austrian and German Empires--passing next to the corresponding advantages and disadvantages of the Allies. The advantages proceeding from geographical position to Germany in particular, and to the Germanic body as a whole, gravely outweigh the disadvantages. We will consider the disadvantages first. The chief disadvantage under which the Germanic body suffered in this connection was that, from the outset of hostilities, it had to fight, as the military phrase goes, upon two fronts. That is, the commanders of the German and Austrian armies had to consider two separate campaigns, to keep them distinct in their minds, and to co-ordinate them so that they should not, by wasting too many men on the East or the West, weaken themselves too much on the other side of the field.