It almost seems as though the bayonet had replaced the old shock action of cavalry in some degree, and that it was to be used only when the opposing troops were shaken or were occupied in too precipitate a retirement. Of successful bayonet work against other conditions we have at least had no examples recorded. (5) On the two chief points in connexion with field artillery, records hitherto received tell us little. We shall not know until more detailed accounts are available whether the vastly superior rapidity of fire enjoyed by the French 75 millimetre gun has given it a corresponding superiority over its opponent, the German 77. That it has a superiority is fairly clear. The degree of that superiority we shall not learn until we have the story of the war from the German side. Neither are we established upon the question of weight. General Langlois’ theory, which convinced the French that the light gun was essential, has not so far been proved absolutely certain, and there have been occasions when the English heavier gun (notably at Meaux) was of vast importance to our Allies. But I suggest that this question will be better answered now the weather has changed. In dry weather, that is, over hard ground, the difference between the heavier and the lighter gun is not so noticeable; once the ground is heavy it becomes very noticeable indeed. (6) With the next question, that of the materials and their supply, we enter a region of the utmost interest to this country in particular, because it is the superiority of this country at sea, and the almost complete blockade of the Germanic Powers, that is here concerned. Roughly speaking, we find (_a_) That a blockade of enemy ports from a great distance is easy; (_b_) of enemy supply _through neutrals_ very difficult indeed; (_c_) That certain special products which modern science has made necessary in war are most affected. For example: Of the many things a modern army requires which are to be found only in a few special places, and those, most of them, out of Europe, the most important of all is petrol. It is obviously of capital importance for air work, and where you have a number of good roads, as in the Western field of operations, it is almost as important for transport work. Now it so happens that petrol is not found in Western Europe at all. The European supply as a whole is limited, and is in the main confined to Galicia, Roumania, and Russia. The Asiatic and American supply is only available to Austria-Hungary and Germany by way of the ocean, and the ocean is closed to them. Russian supply, of course, they cannot obtain. Galician supply swings back and forth now in the possession of the Austrian and now in that of the Russian Army.