The general line of advance of the Fourth Army, which had been north-east, was now changed to east. The orders given to the Thirteenth Corps were to advance in that direction, astride of the Sambre and Oise Canal, to the line of the Cartignies-Dompierre-Bavai Road. The Ninth Corps was to cross the Canal simultaneously on the right of the Thirteenth at Catillon and Ors, advancing on the same objective. The general proposition before the Thirteenth Corps {195} was a total advance of about ten miles, part of it through the south end of Mormal Forest, with the forcing of the Canal crossings thrown in. The frontage of the Corps attack was 7500 yards, narrowing down as it advanced, so three divisions were put into the line. On the right was the Twenty-fifth Division, with the task of forcing the passage of the Canal opposite Landrecies, of capturing that town, and of clearing the country up to Maroilles. The Sixty-sixth Division was then to carry on the advance to the ultimate objective. The Fiftieth Division was in the centre and was to fight a way through Mormal Forest, while the Eighteenth Division on the left was to storm the village of Sassegnies. The desperate determination of the Army may be gauged from the fact that a large number of life-belts were served out to the leading brigade in case it should be necessary to swim the Canal for want of bridges. The attack, the last great concerted movement of the war, was launched at 6.15 in the morning of November 4--a day of thick, all-pervading mist. The order of brigades from right to left in the initial advance was 75, 149, 150, 54, and 53. Good progress was made from the beginning all along the line, and the news from the Ninth Corps was uplifting. They were across south of Catillon and Ors, but the Thirty-second Division, on the immediate right of the Twenty-fifth Division, had been held up, so that they were ordered to move south and pass by the crossings already established. The Twenty-fifth and Fiftieth Divisions both got well away, the former at 9 A.M. being within 300 yards of Landrecies, while the latter was well up to the old bugbear, the {196} Englefontaine-Landrecies Road, though Robinson's 149th Brigade, and especially the 13th Black Watch, had lost heavily. The Eighteenth Division had also attained its first objectives and drove off a half-hearted counter-attack. The 7th West Kents had a desperate house-to-house fight in the village of Hecq, which remained in their hands, while the 2nd Bedfords had a similar hard victory in Preux, where they were much helped by the 10th Essex.