As a result of having delivered many lectures, under official auspices and in compliance with private invitations, on "The Blocking of Zeebrugge," the author has received several requests to record the story in more permanent form. Underlying these requests there appears to be a feeling that first-hand accounts of enterprises in the Great War should be of some value towards preserving that spirit which rallied all classes of individuals in the British Empire, in the Allied Countries, and in the United States of America, to the common cause of upholding civilisation in the face of danger. That opinion, indeed, has been openly stated to the author in Great Britain, by leading members of the educational profession and of the Church, by naval and military officers and others. Opinions of a similar type also have been received from the United States, where, during a recent series of visits to many of the larger cities, the author personally experienced that solid friendship for Great Britain which is sometimes hidden beneath surface irritations of a political nature.
Misunderstandings must occasionally arise between communities and between the members of any single community; they readily take root and develop into serious argument where the existence of a common cause is forgotten. For that reason the author feels that the above-mentioned opinions are not without foundation. Whilst attempting to show that co-operation between the several units of a fighting force and confidence between superiors and subordinates are important factors towards success in war, he has made this humble endeavour to induce the belief that co-operation and confidence in other walks of life are no less necessary.
There is danger of this blocking enterprise being allotted a false position in the contemporary histories of the late war owing to the somewhat prevalent custom of describing war operations with little reference to the various considerations, factors, and events which gave them birth.
The man-in-the-street is sometimes carried away by enthusiasm or despondency, as the case may be, when unexpected events occur during hostilities; he is apt to give little thought to the "why" and "wherefore" of the occurrences. That fact has been exemplified clearly enough with respect to this particular event, for, on all sides, one heard the public verdict, given in the colloquial vulgarism of the period, that the affair was a fine "stunt." The word "stunt," as unmusical to the ear as it was offensive to those concerned in the operations, has been defined as "a voluntary act, spectacular, usually unnecessary, sometimes involving risk, and designed to attract attention." However, the man-in-the-street meant well, and, after all, could justifiably plead that his lack of education on naval matters was to blame. The author has therefore addressed this book to the man-in-the-street, and has endeavoured to "put him wise," as our cousins across the water are in the habit of remarking.
The official despatches dealing with the blocking operations on the Flanders coast were published early in 1919, and, as far as despatches can go, gave a splendid account of the enterprise forming the subject of this book. But despatches are strictly limited in length and necessarily deal more with cold-blooded statements of fact than with psychological aspects. When one reads despatches of the great leaders of the past concerning the operations in their campaigns one cannot fail to notice the almost complete absence of any reference to the moral factor in war. Yet Napoleon himself declared, "The moral is to the physical as three is to one." Material results can easily be gauged under peace conditions, whereas moral effect on human nature in war is only discoverable from one's own war experiences, which are necessarily limited, and from the experiences of others as set forth in the historical records of past wars. It was partly for that reason, presumably, that Napoleon studied the campaigns of Cæsar and Hannibal although their instruments of war were long since out of date.
The usual reasons for the omission of the moral factors from despatches are twofold. Firstly, the leader from whom the despatch emanates may consider it inadvisable to publish his preconceived ideas as to the eventual effect of the operations on the morale of the enemy; this concealment is especially necessary if the despatch is published before the declaration of peace. Secondly, the writer of the despatch is often unaware, at the time of writing, of the effect already obtained against the enemy's morale; such effects may not be discoverable for many months after the operations have been concluded. Under certain circumstances it may also be temporarily inadvisable to present to the enemy, through the medium of despatches, information concerning psychological effects on one's own personnel. These omissions, therefore, must not be taken to infer that the moral factors were ignored. It is clear, then, that post-war accounts of operations may be far from superfluous whether considered from the point of view of the man-in-the-street or that of the student of war.
Without some conception of the strategical situation arising from the German occupation of the Flanders coast it would be difficult to grasp the true nature of the enterprise described herein. An examination of the strategical outlook alone, however, would be insufficient. The geographical and hydrographical, and even the meteorological, situations largely influenced the choice of tactical methods to be pursued for the attainment of the object in view. It is therefore important to consider the situation from these various standpoints in some detail.
The book has been divided into two parts. Part I deals with the Situation, the Object, the General Plan for the attainment of the Object, the Preparatory Work involved, and the various occurrences up to the eve of the Attack. Part II describes the events which occurred during the operation itself, and includes some consideration of both the material and moral results of the enterprise and the lessons to be drawn therefrom.
For the illustrations the author is much indebted to the Admiralty, Air Ministry, Imperial War Museum, and Press, to whom he makes this grateful acknowledgment.