No proof is required that a good Intelligence system is essential to a defensive which is based on the policy of striking unexpected blows. Such a system alone can guarantee the right choice of favourable moments for attack, and can give us such early information of the operative movements of the hostile fleet that we can take the requisite measures for defence, and always retreat before an attack in superior numbers. The numerical superiority of the English cruisers is so great that we shall probably only be able to guarantee rapid and trustworthy "scouting" by the help of the air-fleet. The importance of the air-fleet must not therefore be under-valued; and steps must be taken to repel the enemy's airships, either by employing specially contrived cannons, or by attacking them directly. If it is possible to employ airships for offensive purposes also, they would support our own fleet in their contest with the superior English force by dropping explosives on the enemy's ships, and might thus contribute towards gradually restoring the equilibrium of the opposing forces. These possibilities are, however, vague. The ships are protected to some extent by their armour against such explosives as could be dropped from airships, and it is not easy to aim correctly from a balloon. But the possibility of such methods of attack must be kept in mind. So far as aviation goes, the defending party has the advantage, for, starting from the German coast, our airships and flying-machines would be able to operate against the English attacking fleet more successfully than the English airships against our forts and vessels, since they would have as a base either the fleet itself or the distant English coast. Such possibilities of superiority must be carefully watched for, and nothing must be neglected which could injure the enemy; while the boldest spirit of attack and the most reckless audacity must go hand in hand with the employment of every means which, mechanical skill and the science of naval construction and fortification can supply. This is the only way by which we may hope so to weaken our proud opponent, that we may in the end challenge him to a decisive engagement on the open sea. In this war we _must_ conquer, or, at any rate, not allow ourselves to be defeated, for it will decide whether we can attain a position as a World Power by the side of, and in spite of, England.