We now come to the Twelfth Division upon the flank, the first English division of the New Army, a unit which had greatly distinguished itself at Ovillers and elsewhere. Its task was in some ways the most difficult of any, as it had not only to advance upon important objectives but to build up a flank line of resistance as it went, since the whole attack might have been checked and brought to ruin by an enemy assault from the south. The 36th Brigade upon the left advanced with the 9th Royal Fusiliers and 7th Sussex in their front line, while two companies of the 8th Fusiliers were thrown out upon the left to aid in the attack upon La Vacquerie. On the right by the Banteaux Spur was the 35th Brigade with the 9th Essex and 5th Berkshires in the front. The latter battalion lost heavily from the fire of guns on their right. When on the line of Bleak House the supporting battalions, two companies of Fusiliers and the 11th Middlesex upon the left, the 7th Suffolks and part of the 7th Norfolks upon the right, passed on to the objective. The 37th Brigade then passed through upon the right and settled in an echelon of battalions along the flank, the 7th East Surreys and 6th Buffs starting the line, while the 6th West Kent and 6th West Surrey prolonged it. While executing this delicate and complicated movement the battalions were under heavy fire and had to clear Lateau Wood of the enemy, so that it was a fine bit of work on the part both of the leaders and of the men. The two chief points of German resistance outside the wood were the forts of Pam-Pam and Bonavis, both of which were attacked by tanks and then carried by storm by the Kentish infantry. By 11 o'clock the whole advance, covering a front of 2000 with a depth of 5500 yards, had reached its full objectives at every point. The total losses of the division were about 1300 men. Major Alderman, commanding the West Kents, was among those who fell. It may be added that from this day until the fateful 30th the division was out of the battle and made no move, save that on November 24 the 35th and 36th Brigades pushed a short way down the slope eastwards to the St. Quentin Canal.
Some allusion has already been made to the dispositions of the cavalry. The original plan was that the First and Fifth Cavalry Divisions, closely supported by the Second, should, the instant that the way was clear, push forward to surround and isolate Cambrai, and also to isolate and threaten Bourlon Wood from the north and east. The situation was never such, however, as to allow any large body of cavalry to get through. At dawn on the morning of the 21st a patrol of 5th Lancers ascertained that the Germans still held the Marcoing-Beaurevoir line in force. On the left, however, the success of the fifty-first Division had made more open space, and on this side the Bays and the 4th Dragoon Guards penetrated upon the 21st as far as Fontaine and did some useful work.
The Twelfth Division formed the flank of Pulteney's Third Corps. Upon its right was Snow's Seventh Corps, the left-hand unit of which was the Fifty-fifth Division of Lancashire Territorials, which had not been involved in the advance, and indeed was nominally resting after its supreme exertions at Ypres where it had taken a notable part in battle after battle. It had been planned, however, that some demonstration should be made upon this front in order to divert the enemy's forces and to correspond with the attack at Bullecourt upon the north. This was carried out by the 164th Brigade and may have had the desired effect although it gave no permanent gain. A point called the Knoll, with an adjacent farm, was carried by the stormers and was held for most of the day, but they were forced back to their own old lines in the evening, after a long day of battle in which they incurred such heavy losses that the brigade was seriously crippled at a later date when the full strength of the division was urgently needed.
This ended the first day of the battle, which represented a considerable victory, and one which vindicated the enterprise and brain-power of the British inventor and engineer as much as the valour of the soldier. The German line was deeply indented over a front of 6 miles and to a depth of 4½ miles. More than 5000 prisoners with many guns had been taken. The famous Hindenburg Line had been severed. The villages of Havrincourt, Graincourt, Ribecourt, Marcoing, Noyelle, and Mesnières were all in British hands. It was a good beginning, so good that it was determined not to suspend the operations, but to try the results of a second day and see what could be attained before the arrival of the full German supports. Even with their excellent rear organisation and their great junction at Cambrai, it was hoped that a clear forty-eight hours must pass from the opening of the battle before they could build up a really formidable line.
There were no operations of any importance during the night of the 20th, but early upon November 21 the British line began to move forward once more, the same divisions being engaged in the advance. In the north the Ulstermen, who had attained the line of the Cambrai-Bapaume Road, crossed that boundary and pushed onwards up the slope for about a mile until they reached the outskirts of the village of Mœuvres which they were unable to retain. It was soon apparent, both here and at other points along the line, that the Germans with their usual military efficiency had brought up their reserves even more rapidly than had been expected, and the resistance at Mœuvres was so determined that the tired division was unable to overcome it. The 169th Brigade of the Fifty-sixth Division pushed up on the left of the Ulstermen and occupied the German outpost line, from which they were able later to attack the main Hindenburg Line.
The Sixty-second Division upon the right of the Ulstermen had got to the edge of Anneux upon the night before, and now the 2/4th West Ridings were able to complete their conquest. The 186th Brigade then drove across the Cambrai Road and reached the edge of the considerable plantation called Bourlon Wood which rises upon a swelling hill, the summit being so marked in that gently undulating country that it becomes a landmark in the distance. Here there was very strong opposition, with so murderous a machine-gun fire that all progress was arrested, though a number of tanks drove their way in among the trees in an effort to break down the resistance. In the meantime the flank of the Yorkshiremen had been protected by the capture of the village of Cantaing with several hundred more prisoners.
Early in the day the Fifty-first had got round the northern edge of Flesquières, the village which had held up the centre of the advance upon the first day. As a consequence it fell and the front was cleared for a further advance. The Scotch infantry was then able to make a rapid advance of nearly three miles, taking Cantaing with 500 prisoners upon the way, and winding up in front of the village of Fontaine-Notre-Dame, which they stormed in a very brilliant fashion with the aid of tanks and of some squadrons of the First Cavalry Division as already noted.
Farther south the Sixth and Twenty-ninth Divisions acting in close co-operation had pushed their way through Mesnières, where they met and defeated a counter-attack from the direction of Rumilly. It was clear that every hour the German line was thickening in this quarter. Whilst the Sixth cleared the ground upon the left, the Twenty-ninth pushed forward and reached Noyelle, where with the aid of those useful allies, the dismounted troopers of the First and Fifth Cavalry Divisions, including the Umballa Brigade of Indians, they made good the village as already described.
In the meantime the 10th Rifle Brigade of the Twentieth Division upon the right had first taken and then lost Les Rues des Vignes, an important position upon the British side of the canal. In the afternoon the 11th Rifle Brigade managed to cross the canal and endeavoured to push up towards Crevecoeur, but at this point the river Scheldt ran on the farther side and offered an impediment which could not be crossed. Orders were issued by General Byng that a fresh attempt should be made next morning, but the troops were weary and the losses heavy so the instructions were cancelled and the line remained unaltered at this point.