The advance of the 36th Division was again to bestride the Canal du Nord. The 107th Brigade was to attack on the east side, the 108th Brigade on the west. The former was to be supported by the 93rd Army Field Artillery Brigade and a Siege Battery; the latter by the Division's own Artillery Brigades. The sixteen tanks available were allotted to the 107th Brigade. General Withycombe held a conference of commanding officers and officers of the Tank Battalion at his headquarters near Graincourt. The attack was to have two phases: the first, the capture of the Hindenburg trenches: up to the Canal, of Round Trench and Lock 5; the second, an advance northward to Hobart Street from the Canal to the north corner of Quarry Wood, the northern and eastern skirts of which were to be held. To the first phase eleven tanks were allotted; to the second five, with any survivors of the first. An hour and a half was considered sufficient for the carrying through of the first phase; after which there was to be an hour's pause before the opening of the second. West of the Canal the capture of Mœuvres was to coincide with the first phase. The second was to be the capture of the trench running westward from Lock 4 to the Hindenburg Support System. Zero for the first phase was fixed at 10-30 a.m., the earliest moment possible, seeing that General Withycombe had not been able to issue his orders till 8-30, owing to the difficulty in collecting the tank officers. One company commander in the 107th Brigade has informed the writer that he had less than fifteen minutes to assemble his men and explain the attack to his officers.