That, however, was only a mere preliminary. Upon questions of tactics each tactician consulted held a different view, and each criticised adversely the other's suggestions. With the invaluable assistance of my friend Mr. H. W. Wilson, we had decided upon the naval portion of the campaign; but when it came to the operations on land, I found a wide divergence of opinion everywhere.
One way alone remained open—namely, to take the facts exactly as they stood, add the additional strength of the opposing nations as they will be in 1910, and then draw logical conclusions. This, aided by experts, was done; and after many days of argument with the various authorities, we succeeded at last in getting them in accord as to the general practicability of an invasion.
Before putting pen to paper it was necessary to reconnoitre carefully the whole of England from the Thames to the Tyne. This I did by means of a motorcar, travelling 10,000 miles of all kinds of roads, and making a tour extending over four months. Each town, all the points of vantage, military positions, all the available landing-places on the coast, all railway connections, and telephone and telegraph communications, were carefully noted for future reference. With the assistance of certain well-known military experts, the battlefields were carefully gone over and the positions marked upon the Ordnance map. Thus, through four months we pushed on day by day collecting information and material, sometimes in the big cities, sometimes
