Submarine and Anti-submarine

and tactics as the art of using it when there.' In less scientific language, you fight a battle by means of tactics, and a campaign by means of strategy. But when

ontinental neighbours. British war policy has therefore always been chiefly directed to the provision of an invincible navy for defending our shores and our commerce. The German Empire, on the other hand, is practically self-contained; it lies on the Continent, with land powers for neighbours whom it has long hoped and intended to do

th to us; and the Germans were spending every mark they could spare, to get more and more nearly upon even terms. It is certain that the war policy of both Powers took account of the possible uses of submarine boats; but the lines of thought which they followed were in some ways w

gland' and too little about the duty of supporting our Allies on land; and we had this much justification, that the Power from which we had every reason to expect an attack, was one directed by men of great energy and determination, certain to be relentless in pressing a war home upon us, even at the risk of a heavy loss. On the other hand, those who spoke and wrote most about invasion, nearly always failed to realise the immense difficulty of the undertaking; and they failed especially to see that, in modern times, the conditions had changed very considerably in favour of the defence. The initial problem of an invader by sea must always be the provision of transport sufficient for a large body of troops, with arms, equipment, and supplies of food and munitions. Even if we allow only two tons of shipping per man-the Japanese allowed six tons-the transport of 100,000 men would take twenty vessels of 10,000 tons each, and to collect these and load them would be a big

th eager anticipation. But already it has been found practicable to use our submarines for two very important kinds of work, to an extent which was certainly quite unforeseen. One of these is the chase and destruction of enemy submarines-a kind of service which has been pronounced impossible, even in books written during

and that the German Government was not at all convinced that they would form an essential or a conspicuous part of their future naval programme.' Mr. Hay shows clearly that this was not said with the object of misleading; for he was urging Tirpitz to build, and the Admiral continued to refuse. When war broke out, the German Navy had only twenty-seven submarines built against seventy-six British and seventy French boats, and she was only building twelve more, against the twent

margin of superiority in battle-ships and cruisers. While our Fleet was certain to keep the sea, and protect our long coast-line and huge merchant tonnage, the German High73 Seas Fleet must lie in the Kiel Canal, risking only furtive and futile rushes i

e official announcement of it was made on February 4, 1915. By this document it was declared that on and after February 18, every British or French merchant vessel found in the waters of the 'war region' round these islands '

only interfere with merchant shipping if it were engaged in carrying contraband of war. To ascertain whether the ship you had sighted was carrying contraband or not, you had to board and search her. If innocent, you must let her proceed on her voyage.74 If apparently guilty, you took over her men or otherwise placed them in safety, put a prize crew on board and sent her home to a port of your own, to be tried legally by a prop

arch a big ship, which might prove to be armed with guns or bombs. No submarine could find room for merchant crews or passengers in her own small compartments, and no submarine could afford to spare a prize crew for even one prize, or the time and horse-power to tow her into port. In short, it was plain, from the first, that the legitimate cruiser game could n

rs and crews adri

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ere captured and destroyed by them with every regard for the laws of humanity. But the German submarines had no fleet at sea to back their attempted blockade, and German war policy therefore took the downward course, hacking a way through the rules, and sacrificing, for the hope of victory, the very foundations of civilised human life. The U-boats began by tu