The History of the 36th (Ulster) Division. Cyril Falls
was to attack astride the Ancre. On the left, or southern bank, its objective was the fifth line of German trenches, known as the "D" line.[21] The right flank boundary ran from the north-east corner of Thiepval Wood to D 8. On the right bank the objective was a triangle of trenches enclosed between the left boundary line and the Ancre, beyond Beaucourt Station. The left boundary ran from the point of the salient in our lines, known as the Mary Redan, to two houses half-way between Beaucourt and its railway station, thence along the river to the railway bridge. The ground rose sharply on either side from the deep-cut bed of the Ancre, but while on the northern bank it was cut by a gorge running down from the village of Beaumont-Hamel, at right angles to the river, and parallel with the German trenches, on the south it swelled up in a great convex curve, rising two hundred and fifty feet in a thousand yards. The crest was crowned by a parallelogram of trenches, extending from the German "B" line to the "C" line, that will live long in history as the Schwaben Redoubt. The trenches were defended by masses of wire. An artillery officer, who made a careful reconnaissance with a good glass from "Brock's Benefit," on the Mesnil Ridge, counted sixteen rows guarding the front line just south of the river, and an average of five rows along the second line. The dug-outs, most of them at least thirty feet deep in the chalk, were to all intents and purposes shell-proof, and were numerous enough to house the whole trench garrison. The enormous activity behind our lines had taught the Germans long before that an attack was brewing. They trusted to their fortifications and awaited it with confidence.
For the purposes of attack, the front was divided into four sections. The right and right centre sections were allotted to the 109th and 108th Brigades respectively. The left centre section, bounded by a line drawn from the north corner of Thiepval Wood just north of B 19, C 11, and D 11, and the Ancre, was, owing to the great frontage of the 36th Division, not to be attacked directly. The left section, on the right bank of the Ancre, was allotted to the 108th Brigade. This Brigade had attached to it one battalion of the 107th. It was to employ three battalions in the right centre section, and two in the left section. The 107th Brigade (less one battalion) was in Divisional Reserve.
The task of the 109th Brigade in the right section was to attack the "A" and "B" lines within its section,[22] and to advance to a line drawn from C 8 through B 16 to the Grandcourt-Thiepval Road at C 9; there to halt and consolidate. For this purpose General Shuter was attacking with two battalions, the 9th Inniskillings on the right, the 10th on the left, in first line; and the two remaining, 11th Inniskillings on right and 14th Rifles on left, in second. The two first were to take and consolidate the final objective, the rear battalions to hold the "A" and "B" lines and to send up liaison patrols to get touch with the leading battalions. The most important task of the 11th Inniskillings was the fortification of the Crucifix on the Thiepval-Grandcourt Road.
The task of the 108th Brigade in the right centre section was to clear the "A" and "B" lines within the section, and advance to the "C" line, halting and consolidating on the salient C 9, C 10, C 11, the north-east corner of the Schwaben Redoubt. A special detachment, with one Stokes mortar, one Lewis and one Vickers gun, was to act as left flank guard, to clear the communication trench from B 19 to C 12, holding the latter as a defensive post, and sending a detachment down to C 13, to ensure observation and fire on the Grandcourt-St. Pierre Divion Road. In addition, two officers' patrols, each a platoon in strength, with a Lewis gun, were to reconnoitre and clear the left of the "A" and "B" lines up to St. Pierre Divion. General Griffith was attacking here with the 11th Rifles on the right, the 13th on the left, and the 15th Rifles of the 107th Brigade, attached, in support.
North of the Ancre, in the left section, the task allotted to the two remaining battalions of the 108th Brigade was to assault the German salient on the left of its objective and clear the trenches down to the railway, to establish strong points at B 26, B 24, and B 21, and to occupy Beaucourt Station and the trenches immediately behind it. It was afterwards to occupy the mill on the river bank and the two houses beyond the station. Here the 9th Irish Fusiliers were attacking on the right, and the 12th Rifles on the left. Of the latter battalion one platoon was detailed to attack the railway sap, of which mention has already been made, and one to patrol the marsh.
The assault on the "D" line, the final objective, was to be carried out by the 107th Brigade with its three remaining battalions. The Brigade was to advance through Thiepval Wood, following the 109th Brigade, pass through the leading Brigades on the "C" line and attack the "D" line from D 8 to D 9; then to extend its left to D 11. General Withycombe disposed the 10th and 9th Rifles in first line, the former with its right on D 8, the latter with its left on D 9. After the capture of this objective, the 9th Rifles were to extend to D 10 and the 10th to D 9. The 8th Rifles, moving up in rear, were to occupy and hold from D 10 to D 11.
The assaulting battalions were to advance, each in eight successive waves, at fifty yards' interval, but the 107th Brigade, passing through to the attack on the final objective, was to advance in artillery formation till compelled to extend.
The artillery consisted of the 36th Divisional Artillery, one Brigade of the 49th Division, a Regiment of French Artillery, and, under the orders of the X. Corps, a greater concentration of heavy artillery than had been made in the course of the war till now, except perhaps in the latter stages of Verdun. The preliminary bombardment was to last five days, from the 24th to the 28th of June. Owing to wet weather the attack was postponed two days, and there were two extra days of bombardment. The results, as witnessed from our observation posts, were magnificent. All wire that could be seen was effectively cut. As one watched the big shells bursting, sending up huge columns of earth, day after day, it appeared as though no life could continue in that tortured and blasted area. The barrage for the attack was not the true "creeping barrage" which was to become universal later on, and was, indeed, employed that day by the French. After a final intensive bombardment of sixty-five minutes, it fired upon each German line in succession, lifting from the "A" to the "A.I." at Zero, from the "A.I." at Zero plus three minutes, from the "B" at Zero plus eighteen minutes, to a line 400 yards east of this objective. Then at Zero plus twenty-eight minutes it moved on to the "C" line, and at Zero plus one hour eighteen minutes off the "C" line to the "D." There was then a long halt to permit of the passing through of the 107th Brigade. At Zero plus two hours thirty-eight minutes the barrage moved up to a line three hundred yards east of the "D" line. At each lift, sections of 18-pounders and 4.5 howitzers "walked up" the communication trenches to the next barrage line. Stokes mortars were to take part in a final hurricane bombardment prior to Zero, while medium[23] and heavy mortars were also employed, the former on special points, the latter moving with the artillery barrage to the extremity of their range. The French artillery joined in the preliminary wire-cutting, using high explosive instead of shrapnel according to its custom, but its main task was the drenching of the Ancre valley with gas shell.
Two machine-guns were to accompany each battalion in the attack, the remaining eight of each Machine-Gun Company being in Brigade Reserve. Guns were allotted to all the principal strong points that were to be consolidated. Eighteen Stokes mortars were to go forward, the personnel of the remaining eighteen acting as carriers. Two sections of the 150th Field Company were allotted to the 109th Brigade, and one section of the 122nd Field Company to the 108th Brigade on each bank of the Ancre. The remainder of the Field Companies were in Divisional Reserve.
The medical arrangements were of peculiar difficulty, particularly on the southern part of the front. The two Main Dressing Stations, for stretcher cases and "walking wounded" respectively, were at Forceville, manned by the 108th Field Ambulance, and Clairfaye Farm, further west, manned by the 110th Field Ambulance. The Advanced Dressing Station was situated close to the Albert-Arras Road in Aveluy Wood. Evacuation of wounded from the Regimental Aid Posts in Thiepval Wood and Authuille had to take place over Authuille Bridge, or by the trench tramway which crossed the Ancre to the north of it. The motors of the Field Ambulance were parked on the Martinsart-Albert Road, south of the former village. For "walking wounded" there was a collecting station west of Martinsart, whence horsed wagons carried them by a cross-country track through Hédauville to Clairfaye. From Hamel evacuation was simpler, though even here it had to follow a specially dug trench