We shall now descend the line to the section which extends from Bullecourt in the north to Villers-Ghislain in the south, opposite to the important town of Cambrai, some seven miles behind the Hindenburg Line. It was here that the Field-Marshal had determined to strike his surprise blow, an enterprise which he has described in so lucid and detailed a despatch that the weary chronicler has the rare experience of finding history adequately recorded by the same brain which planned it. The plan was a very daring one, for the spot attacked was barred by the full unbroken strength of the Hindenburg main and support lines, a work so huge and solid that it seems to take us back from these superficial days to the era of the Cyclopean builder or the founder of the great monuments of antiquity. These enormous excavations of prodigious length, depth, and finish are object lessons both of the strength of the Germans, the skill of their engineers, and the ruthlessness with which they exploited the slave and captive labour with which so much of it was built. Besides this {238} terrific barricade there was the further difficulty that the whole method of attack was experimental, and that to advance without artillery fire against such a position would appear to be a most desperate venture. On the other hand it was known that the German line was thin and that their man-power had been attracted northwards by the long epic of the Paschendaale attack. There was a well-founded belief that the tanks would prove equal to the task of breaking the front, and sufficient infantry had been assembled to take advantage of any opening which might be made. The prize, too, was worth a risk, for apart from the possibility of capturing the important centre of Cambrai, the possession of the high ground at Bourlon would be of great strategic value. The enterprise was placed in the hands of General Byng, the famous leader of the Third Cavalry Division and afterwards of the Canadian Corps, who had taken Allenby's place at the head of the Third Army. Under him were from the north, the Sixth, Fourth, Third, and Seventh Corps under Haldane, Woolcombe, Pulteney, and Snow, containing some of the most seasoned fighting material in the army. The troops were brought up stealthily by night, and the tanks which were crawling from every direction towards the trysting-place were carefully camouflaged. The French had been apprised of the attack, and had made arrangements by which, if there were an opening made to the south some of their divisions should be available to take advantage of it. [Illustration: Fighting Line, November 20, 1917]