The title chosen by its author for this little volume would assuredly commend it to the Naval Service, even if that author's name were not—as it is—a household word with more than one generation of naval officers. But to such of the general public as are not yet familiar with Mr Thursfield's writings a brief word of introduction may perhaps be useful. For the matters herein dealt with are by no means of interest only to the naval profession. They have their bearing also on every calling and trade. In these days when national policy is at the mercy of the ballot-box, it is not too much to say that a right understanding of the principles of maritime warfare is almost as desirable amongst civilians as amongst professional sailors.

Regrettable indeed would it be if the mere fact that this little book bears a more or less technical title should tempt the careless to skip its pages or pitch it to that dreary limbo which attends even the best of text-books on subjects which we think do not concern us. The fruits of naval victory, the calamities attendant on naval defeat are matters which will come home—in Bacon's classic phrase—to the business and the bosoms of all of us, landsmen and seamen alike. Most Englishmen are at least dimly aware of this. They realise, more or less reluctantly perhaps, that a decisive British defeat at sea under modern conditions would involve unspeakable consequences, consequences not merely fatal to the structure of the Empire but destructive also of the roots of our national life and of the well-being of almost all individuals in these islands.

Elementary prudence insists on adequate safeguards against evils so supreme, and amongst those safeguards the education of the people to-day occupies a foremost place. Our Empire's destinies for good and evil are now in the hands of the masses of the people. Sincerely as all lovers of ordered freedom may rejoice in this devolution of political power to the people, thoughtful men will be apt to reflect that an uninstructed crowd is seldom right in its collective action. If Ministerial responsibility has dwindled, pro tanto that of each one of His Majesty's lieges has enormously increased; and it is more incumbent on the nation's rank and file to-day than ever in the past to equip themselves with the knowledge necessary to enable them to record their votes aright.

It is from this point of view that this Manual should be read. It epitomises the principles upon which success in naval warfare depends. It shows how the moral factor in all cases and at every epoch dominates and controls the material; how the "animus pugnandi," as Mr Thursfield calls it, the desire to get at the enemy in "anything that floats," transcends every other weapon in a nation's armoury; how if that spirit is present, all other difficulties can be surmounted, and how without it the thickest armour, the biggest all-shattering guns shrivel in battle to the measure of mere useless scrap iron.

This is the message of the book for the seaman. But—and this is of the essence of the whole matter—for the landsman it has also a lesson of a very different kind. His responsibility is for the material factor in naval war. Let him note the supreme value of the moral factor; let him encourage it with all possible honour and homage, but let him not limit his contribution to the nation's fighting capital to any mere empty lip-service of this kind. The moral factor is primarily the sailor's business. The landsman's duty is to see to it that when war comes our sailors are sent to sea, not in "anything that floats" but in the most modern and perfect types of warship that human ingenuity can design.

How can this fundamental duty be brought home to the individual Englishman? Certainly not by asking him to master the niceties of modern naval technique, matters on which every nation must trust to its experts. But, the broad principles of naval warfare are to-day precisely as they were at Salamis or Lepanto; and to a people such as ours, whose history from its dawn has been moulded by maritime conditions, and which to-day more than ever depends upon free oversea communications for its continued existence, these broad principles governing naval warfare have so real a significance that they may wisely be studied by all classes of the community.

Tactics indeed have profoundly altered, and from age to age may be expected to change indefinitely. But so long as the sea remains naval warfare will turn upon the command of the sea; a "Fleet in Being" will not cease to be as real a threat to its foe as it was in the days of Torrington; invasion of oversea territory will always be limited by the same inexorable factors which for centuries have told in favour of the British race and have kept the fields of England inviolate from the tread of a conqueror.

There are indications that still more heavy sacrifices will be demanded from the British taxpayer for the upkeep of the Fleet in the future than has been the case even in the recent past. Nothing but iron necessity can justify this unfruitful expenditure, this alienation of the national resources in men and money to the purposes of destruction. Even as it is, naval administrators are finding it increasingly difficult to carry all sections of politicians and the whole of the masses of this country with them in these ever-increasing demands. The best way of ensuring that future generations of Englishmen will rise to the necessary height of a patriotic sense of duty and will record their votes in support of such reasonable demands is to prepare their minds by an elementary knowledge of what naval warfare really means.

No Englishman, so far as the writer is aware, is better fitted than Mr Thursfield to undertake this task, and this little book is a very excellent example of the way in which that task should be fulfilled. It unites—very necessarily—a high degree of condensation with a simplicity of language and a lucidity of exposition both alike admirable. And Mr Thursfield's right to be heard on naval questions is second to that of no civilian in these islands. His relations with the British Navy have been for more than a quarter of a century of the closest kind. His reputation in the particular field of literary endeavour which he has made his own ranks high amongst writers as celebrated as Admiral Mahan, Sir George Sydenham Clarke (Lord Sydenham), the late Sir John Colomb, and his brother the late Admiral P.H. Colomb, Sir J.K. Laughton, Admiral Sir Cyprian Bridge, Admiral Sir R.N. Custance, Mr Julian Corbett, Mr David Hannay, Mr Archibald Hurd, and others. In the domain of naval history, its philosophy and its literature, he has done brilliant work. When it is added that Mr Thursfield is known to have been, for many years, one of the chief naval advisers of The Times, enough will probably have been said to ensure a sympathetic attention for this the veteran author's latest publication.

C.L. OTTLEY

24th July 1913