From Introduction: "Who wants to be a raw recruit for life, all thumbs and muddle-mindedness? Well, that is what a boy or girl is bound to be when he or she grows up without knowing what the Royal Navy of our Motherland has done to give the British Empire birth, life, and growth, and all the freedom of the sea. The Navy is not the whole of British sea-power; for the Merchant Service is the other half. Nor is the Navy the only fighting force on which our liberty depends; for we depend upon the United Service of sea and land and air. Moreover, all our fighting forces, put together, could not have done their proper share toward building up the Empire, nor could they defend it now, unless they always had been, and are still, backed by the People as a whole, by every patriot man and woman, boy and girl. But while it takes all sorts to make the world, and very many different sorts to make and keep our British Empire of the Free, it is quite as true to say that all our other sorts together could not have made, and cannot keep, our Empire, unless the Royal Navy had kept, and keeps today, true watch and ward over all the British highways of the sea. None of the different parts of the world-wide British Empire are joined together by the land. All are joined together by the sea. Keep the seaways open and we live. Close them and we die. This looks, and really is, so very simple, that you may well wonder why we have to speak about it here. But man is a land animal. Landsmen are many, while seamen are few; and though the sea is three times bigger than the land it is three hundred times less known. History is full of sea-power, but histories are not; for most historians know little of sea-power, though British history without British sea-power is like a watch without a mainspring or a wheel without a hub. No wonder we cannot understand the living story of our wars, when, as a rule, we are only told parts of what happened, and neither how they happened nor why they happened. The how and why are the flesh and blood, the head and heart of history; so if you cut them off you kill the living body and leave nothing but dry bones. Now, in our long war story no single how or why has any real meaning apart from British sea-power, which itself has no meaning apart from the Royal Navy. So the choice lies plain before us: either to learn what the Navy really means, and know the story as a veteran should; or else leave out, or perhaps mislearn, the Navy's part, and be a raw recruit for life, all thumbs and muddle-mindedness."