Probably the most remarkable manifestation of the advantages that may be derived in suitable conditions from a strategical defensive is also to be found in the late Russo-Japanese War. In the final crisis of the naval struggle the Japanese fleet was able to take advantage of a defensive attitude in its own waters which the Russian Baltic fleet would have to break down to attain its end, and the result was the most decisive naval victory ever recorded. The deterrent power of active and dexterous operations from such a position was well known to our old tradition. The device was used several times, particularly in our home waters, to prevent a fleet, which for the time we were locally too weak to destroy, from carrying out the work assigned to it. A typical position of the kind was off Scilly, and it was proved again and again that even a superior fleet could not hope to effect anything in the Channel till the fleet off Scilly had been brought to decisive action. But the essence of the device was the preservation of the aggressive spirit in its most daring form. For success it depended on at least the will to seize every occasion for bold and harassing counter-attacks such as Drake and his colleagues struck at the Armada. To submit to blockade in order to engage the attention of a superior enemy's fleet is another form of defensive, but one that is almost wholly evil. For a short time it may do good by permitting offensive operations elsewhere which otherwise would be impossible. But if prolonged, it will sooner or later destroy the spirit of your force and render it incapable of effective aggression. The conclusion then is that although for the practical purpose of framing or appreciating plans of war the classification of wars into offensive and defensive is of little use, a clear apprehension of the inherent relative advantages of offence and defence is essential. We must realise that in certain cases, provided always we preserve the aggressive spirit, the defensive will enable an inferior force to achieve points when the offensive would probably lead to its destruction. But the elements of strength depend entirely on the will and insight to deal rapid blows in the enemy's unguarded moments. So soon as the defensive ceases to be regarded as a means of fostering power to strike and of reducing the enemy's power of attack it loses all its strength. It ceases to be even a suspended activity, and anything that is not activity is not war.