This was the situation in October, 1911, when immediately after the Agadir crisis I became First Lord and proceeded to form a new Board of Admiralty. Seeing that we had not for the time being the numerical force of destroyers able to master the destroyers of the potential enemy in his home waters, nor the power to support our flotillas with heavy ships, and having regard also to the difficulty and hazard in all the circumstances of storming and capturing one of his now fortified islands, we proceeded forthwith to revise altogether the War Plans and substitute, with the full concurrence of our principal commanders afloat, the policy of distant blockade set up in the Admiralty War Orders of 1912.
The policy of distant blockade was not adopted from choice, but from necessity. It implied no repudiation on the part of the Admiralty of their fundamental principle of aggressive naval strategy, but only a temporary abandonment of it in the face of unsolved practical difficulties; and it was intended that every effort should be made, both before and after a declaration of war, to overcome those difficulties. It was rightly foreseen that by closing the exits from the North Sea into the Atlantic Ocean, German commerce would be almost completely cut off from the world. It was expected that the economic and financial pressure resulting from such a blockade would fatally injure the German power to carry on a war. It was hoped that this pressure would compel the German fleet to come out and fight, not in his own defended waters, but at a great numerical disadvantage in the open sea. It was believed that we could continue meanwhile to enjoy the full command of the seas without danger to our sea communications or to the movement of our armies, and that the British Isles could be kept safe from invasion. There was at that time no reason to suppose that these conditions would not continue indefinitely with undiminished advantage to ourselves and increasing pressure upon the enemy. So far as all surface vessels are concerned, and certainly for the first three years of the war, these expectations were confirmed by experience.
Under these orders the Fleet was disposed strategically so as to block the exits from the North Sea by placing the Grand Fleet at Scapa Flow and drawing a cordon of destroyers across the Straits of Dover supported by the older battleships and protected by certain minefields. These conclusions stood the test of the war. They were never departed from in any important respect by any of the Boards of Admiralty which held office. By this means the British Navy seized and kept the effective control of all the oceans of the world.
They did not, however, secure the command of the Baltic, nor the absolute control of the North Sea. We could no longer hope to prevent the enemy from sallying out of his harbours whenever he chose. What use would he make of this liberty, at the outset or during the progress of a war? By what means could we restrict him most effectually?
We sought to probe these questions in the naval manœuvres of 1912 and 1913.
In 1912 the newly-formed Admiralty War Staff prepared, as an experiment, a plan for an immense cordon of cruisers and destroyers, supported by the Battle Fleet, from the Coast of Norway to a point on the East Coast of England. To a military eye this system appeared unsound, and indeed outside the Admiralty it was generally condemned by naval opinion. I quoted Napoleon’s scathing comment in 1808: ‘Est-ce qu’on a adopté le système des cordons? Est-ce qu’on veut empêcher le contrebande de passer au l’ennemi? Qui est-ce qui peut conseiller au Roi de faire des cordons? Après dix années de guerre doit-on revenir à ces bêtises-là?’ The cordon system was however tried, and was completely exposed and broken down. We then fell back upon a system of what I may call ‘prowling squadrons and occasional drives,’ that is to say, we recognised that we could not maintain any continuous control of the North Sea. The best we could do was to sweep it in strength at irregular intervals and for the rest await the action of the enemy. This clearly involved a considerable risk of raiding forces which might amount to ten or twenty thousand men slipping through and disembarking on our coast. I therefore called for careful individual study to be made of all the different points where such forces could be landed, and what would be the best plans for the Germans to make in each case. At the manœuvres of 1913 Sir John Jellicoe adopted several of these plans for raiding the British coast and put them into execution. He achieved so considerable a measure of success that I thought it necessary to stop the manœuvres on the third day lest we might teach the Germans as well as ourselves.
But before there could be any question of employing the war policy on which the Admiralty had decided, there was a preliminary period to be traversed of the most momentous and critical character. This period raised another set of problems before which the inconveniences of raids, or even an attempt at serious invasion, paled in gravity. Of all the dangers that menaced the British Empire, none was comparable to a surprise of the Fleet. If the Fleet or any vital part of it were caught unawares or unready and our naval preponderance destroyed, we had lost the war, and there was no limit to the evils which might have been inflicted upon us except the mercy of an all-powerful conqueror. We have seen in recent years how little completely victorious nations can be trusted to restrain their passions against a prostrate foe. Great Britain, deprived of its naval defence, could be speedily starved into utter submission to the will of the conqueror. Her Empire would be dismembered; her dominions, India and her immense African and island possessions would be shorn off or transferred to the victors. Ireland would be erected into a hostile well-armed republic on the flank of Great Britain; and the British people, reduced to a helpless condition, would be loaded with overwhelming indemnities calculated to shatter their social system, if, indeed, they were not actually reduced, in Sir Edward Grey’s mordant phrase, to the position of ‘the conscript appendage of a stronger Power.’ Less severe conditions than have since been meted out to Germany would certainly have sufficed to destroy the British Empire at a stroke for ever. The stakes were very high. If our naval defence were maintained we were safe and sure beyond the lot of any other European nation; if it failed, our doom was certain and final.
To what lengths, therefore, would the Germans go to compass the destruction of the British Fleet? Taking the demonic view of their character which it was necessary to assume for the purposes of considering a war problem, what forms of attack ought we to reckon with? Of course, if Germany had no will to war, all these speculations were mere nightmares. But if she had the will and intention of making war, it was evident that there would be no difficulty in finding a pretext arising out of a dispute with France or Russia, to create a situation in which war was inevitable, and create it at the most opportune moment for herself. The wars of Frederick and of Bismarck had shown with what extraordinary rapidity and suddenness the Prussian nation was accustomed to fall upon its enemy. The Continent was a powder magazine from end to end. One single hellish spark and the vast explosion might ensue. We had seen what had happened to France in 1870. We had seen what neglect to take precautions had brought upon the Russian fleet off Port Arthur in 1904. We know now what happened to Belgium in 1914, and, not less remarkable, the demand Germany decided to make upon France on August 1, 1914, that if she wished to remain neutral while Germany attacked Russia, she must as a guarantee hand over to German garrisons her fortresses of Verdun and Toul.
Obviously, therefore, the danger of a “bolt from the Blue” was by no means fantastic. Still, might one not reasonably expect certain warnings? There would probably be some kind of dispute in progress between the great Powers enjoining particular vigilance upon the Admiralty. We might hope to get information of military and naval movements. It was almost certain that there would be financial perturbations in the Exchanges of the world indicating a rise of temperature. Could we therefore rely upon a week’s notice, or three days’ notice, or at least twenty-four hours’ notice before any blow actually fell?
In Europe, where great nations faced each other with enormous armies, there was an automatic safeguard against surprise. Decisive events could not occur till the armies were mobilised, and that took at least a fortnight. The supreme defence of France, for instance, could not therefore be overcome without a great battle in which the main strength of the French nation could be brought to bear. But no such assurance was enjoyed by the British Fleet. No naval mobilisation was necessary on either side to enable all the modern ships to attack one another. They had only to raise steam and bring the ammunition to the guns, But beyond this grim fact grew the torpedo menace. So far as gunfire alone was concerned, our principal danger was for our Fleet to be caught divided and to have one vital part destroyed without inflicting proportionate damage on the enemy. This danger was greatly reduced by wireless, which enabled the divided portions to be instantly directed to a common rendezvous and to avoid action till concentration was effected. Besides, gunfire was a game that two could play at. One could not contemplate that the main strength of the fleets would ever be allowed to come within range of each other without taking proper precautions. But the torpedo was essentially a weapon of surprise, or even treachery; and all that was true of the torpedo in a surface vessel applied with tenfold force to the torpedo of a submarine.