The Battalion left the camp on November 22nd for Poperinghe where they entrained to continue the journey up the line, and arriving at St. Jean Station, detrained and marched to "Irish Camp."

On the afternoon of the 23rd a start was made for the Passchendaele front line system, the route taken by the Battalion being for the greater part over the duck board walks "Mouse Trap Track," which covered ground won in the recent big push at Passchendaele. The take-over was not completed without casualties, but these were comparatively few considering the dangerous nature of the going, which was in the open over shell-pitted ground. The Battalion relieved by the 17th was the 1st Northamptonshire Battalion. During the night the 17th captured its first prisoner in this area—a corporal of the 315th Regiment. According to his statement he had been out on patrol when he lost one of his boots in the mud and in trying to find it he had strayed into our lines and been taken. During their initial tour of the Passchendaele system much heavy work was done in converting the shell-hole defence line into trenches, and patrolling. Several casualties were reported each day and the mud was thick and sticky. On the 26th the Battalion was relieved and proceeded to Dambre Camp in the Vlamertinghe area where everybody rested and completed the preparations for the forthcoming offensive at Passchendaele.

It may be said at the outset that the element of surprise intended in the Passchendaele attack failed entirely, as the enemy were aware of the British intentions and fully prepared. In addition, the fact that the artillery barrage proper did not open until zero plus eight minutes, allowed the enemy entire freedom of action in his front posts with rifles and machine guns.

The Battalion moved into the line on the evening of December 1st in conjunction with the other Battalions of the Brigade—2nd K.O.Y.L.I.; 16th H.L.I.; 11th Border Regiment; and the 15th Lancashire Fusiliers (attached). The 16th Northumberland Fusiliers of the 96th Infantry Brigade were attached to the 97th Infantry Brigade as counter-attacking troops to be used in the event of a strong hostile counter-attack on the Brigade front. The frontage taken over by the Brigade was one of 1,850 yards approximately along the Passchendaele Ridge. There were two objectives to be taken, of which sections were detailed as the job of the 17th—a slice which included two formidable "pill-boxes" known as the "Vat and Veal Cottages."

The Battalion assembled on a frontage of 400 yards and at Zero Hour (1.55 a.m.) moved forward to the attack. Companies deployed from a two platoon frontage in snake formation—this method having been adopted owing to the shell torn nature of the ground—and advanced in four waves. "A" and "B" Companies were to capture the first objective, mopping up all occupied points in the way, including the two pill boxes, while "C" and "D" were to "leap-frog" through them, carry the next objective and consolidate.

The initial stages of the attack were successfully carried through, but the enemy—as was afterwards learned—knowing of what was on foot, waited in readiness. Suddenly he opened heavy machine gun fire upon the advancing Companies, inflicting heavy casualties which, in the dark and over the difficult ground, had the effect of splitting up the sections and creating some confusion. The officers and men of the Battalion gallantly pressed on against these odds, however, and succeeded in reaching their objective; but the enemy machine gun and rifle fire became so intense that their advanced positions were rendered humanly untenable. Our men, though forced to retire in places, established themselves in shell-hole posts, where an attempt was made to consolidate.

The artillery and machine gun barrage, though intense, had failed, owing to the enemy's fore-knowledge of the attack, to effect its purpose. His strong points were heavily garrisoned and wired and he was also found to be established in strong lines of trenches also effectively wired. The Battalion hung on all through that awful night in its isolated positions, for orders were received that the attack would be renewed in the morning, but these orders were afterwards cancelled.

From dawn onwards artillery fire slackened somewhat, but the enemy machine gunners and snipers kept up harassing fire from their well established posts against the men in their exposed and isolated posts.

It was obvious that a hostile counter-attack might be expected, and this took place about 4 p.m. on the afternoon of the 2nd, preceded by an intense artillery barrage. Owing to the terrible difficulties of their position, and the sweeping casualties inflicted, the line was forced back, but the actual enemy attack which followed his barrage was met by the rifle fire of the shattered 17th, and after the Bosches had approached within a certain distance of the posts, they broke and turned back in retreat.