At noon on the 21st the attack began. The whole operation was an unqualified success. Before the afternoon was far advanced the objectives had all been gained and consolidated, blocks established in Regina and up the Pys Road, and contact effected with the equally successful 53rd Brigade of the 18th Division on the left. The co-operation of the 10th Brigade on the right was all that could be desired. Altogether the result of the action was a welcome change from the disappointments attending the hard-fought and determined attempts against Regina earlier in the month. The new and comparatively raw Division had won its spurs with éclat.

On the 25th of the month a second preliminary operation was undertaken. In preparation for this attack the right of the 10th Brigade was extended to the Chalk Pit.

At 7 a.m. the attacking Battalion, the 44th, advanced to the assault, supported by the 46th. Early reports seemed to indicate that the operation had been entirely successful. It soon became evident, however, that this was not the case. The enemy was enabled to hold his trenches in great force and to bring a devastatingly effective enfilading machine-gun fire to bear upon the 44th from the vicinity of the quadrangle. There was nothing for it but to take such cover as was available—old disused trenches and shell-holes, where many remained until dark. The Battalion suffered very heavily, having 3 officers killed and 7 wounded, and of other ranks 29 killed, 152 wounded, and 23 missing. The work of the stretcher-bearers in this action was especially commendable.

A long period of very bad weather compelled the postponement of further operation from day to day. Numerous operation orders and amending orders were issued, but nothing could be attempted until better weather conditions prevailed. It was decided that an attack on the remaining right section of Regina Trench would be made as soon as the weather should allow of two days' successful bombardment. On November 9th and 10th fine weather permitted good shooting. The plan of attack had been ready for some time in anticipation, and accordingly an assault was determined for the night of November 10th-11th.

From right to left the attacking line consisted of the 46th and 47th Battalions of the 10th Brigade and the 102nd Battalion of the 11th Brigade, attached for the purpose to the 10th Brigade. The aim was to capture and consolidate Regina Trench from the block established in Regina on the right flank of the 11th Brigade attack of October 21st to Farmer's Road. The 46th Battalion, on the right, attacked the line from the right boundary of the objective to the intersection of the Practice Road. The 47th Battalion was responsible for the central section. The 102nd Battalion, on the left, advanced against the remaining portion of Regina and also from the right extremity of the part of Regina already held in a north-easterly direction against the new enemy line running north and north-west from Regina to the Pys Road.

The 46th and 47th Battalions attacked at zero hour, midnight, with two companies each in line, in four waves. The company of the 102nd which advanced against Regina went forward in two waves, as did also the three platoons which attacked from Regina north-easterly towards the new German line.

The operation as a whole was very successful. The enemy's barrage was over the heads of the attacking troops, who stole a march on their opponents, for zero hour found them 150 yards in advance of their front trench, so that they were in amongst the Germans almost before the Huns realised what was happening. In the centre success was immediate and complete, though the 47th suffered more severely than the other Battalions for the reason that they were the only Battalion to run into heavy machine-gun fire. On the right the 46th was equally victorious, but they encountered a stiffer resistance. Good fortune also favoured the attack of the 102nd Battalion on the left. The specified portion of Regina was captured, and the northern attacking party was also, at first, completely successful; later, however, they were bombed back some distance, and established a block about 85 yards in advance of Regina. This post was stoutly held against a number of determined counter-attacks.

By 1.20 a.m. the 46th and 47th had overrun their objective, and dug in some 100 yards beyond it. Unfortunately, this new line came under our own protective artillery fire, and had to be abandoned. By 2.20 a.m., however, consolidation was well advanced. The required posts were established, and work started on new connecting saps and trenches. The working party which the O.C. 46th had been ordered to detail came up on time, and everything was rapidly rounding into shape, including the new connecting trench between Regina and Kling Trenches.

At daybreak a concentration by the enemy in Below and New Gallwitz Trenches was dispersed by our artillery. Conditions rapidly became normal, and it was now possible to take stock of the position. Altogether it had been a notable success for the 4th Division.

The casualties in the 10th Brigade were 3 officers killed and 4 wounded, and 41 other ranks killed, 156 wounded, and 26 missing. The majority of these were of the 47th Battalion.