THE RETREAT TO THE HINDENBURG LINE
THE RETREAT TO THE HINDENBURG LINE
General Headquarters, British Armies in France,
1st May, 1917{19}.
My Lord, —
I have the honour to submit the following Report on the operations of the British Armies in France from the 18th November, 1916, to the commencement of our present offensive.
Nature of Operations
I. My plans for the winter, already decided on at the opening of the period under review, were based on several considerations :—
The enemy's strength had been considerably reduced by the severe and protracted struggle on the Somme battlefields, and so far as circumstances and the weather would permit it was most desirable to allow him no respite during the winter.
With this object, although possibilities were limited by the state of the ground under winter conditions, I considered it feasible to turn to good account the very favourable situation then existing in the region of the River Ancre as a result of the Somme battle.
Our operations prior to the 18th November, 1916, had forced the enemy into a very pronounced salient in the area between the Ancre and the Scarpe Valleys, and had obtained for us greatly improved opportunities for observation over this salient. A comparatively short further advance would give us complete possession of the few points south of the Ancre to which the enemy still clung, and would enable us to gain entire command of the spur above Beaumont Hamel. Thereafter, the configuration of the ground in the neighbourhood of the Ancre Valley was such that every fresh advance would enfilade the enemy's positions and automatically open up to the observation of our troops some new part of his defences. Arrangements could therefore be made for systematic and deliberate attacks to be delivered on selected positions, to gain further observation for ourselves and deprive the enemy of that advantage. By these means the enemy's defences would be continually outflanked, and we should be enabled to direct our massed artillery fire with such accuracy against his trenches and communications as to make his positions in the Ancre Valley exceedingly costly to maintain.
With the same object in view a number of minor enterprises and raids were planned to be carried out along the whole front of the British Armies.
In addition to the operations outlined above, preparations for the resumption of a general offensive in the spring had to be proceeded with in due course. In this connection, steps had to be taken to overcome the difficulties which a temporary lack of railway facilities would place in the way of completing our task within the allotted time. Provision had also to be made to cope with the effect of winter conditions upon work and roads, a factor to which the prolonged frost at the commencement of the present year subsequently gave especial prominence.
Another very important consideration was the training of the forces under my command. It was highly desirable that during the winter the troops engaged in the recent prolonged fighting should be given an adequate period out of the line for training, rest and refitting.
Certain modifications of my programme in this respect eventually became necessary. To meet the wishes of our Allies in connection with the plan of operations for the spring of 1917, a gradual extension of the British front southwards as far as a point opposite the town of Roye was decided on in January, and was completed without incident of importance by the 26th February, 1917. This alteration entailed the maintenance by British forces of an exceptionally active front of no miles, including the whole of the Somme battle front, and, combined with the continued activity maintained throughout the winter, interfered to no small extent with my arrangements for reliefs. The training of the troops had consequently to be restricted to such limited opportunities as circumstances from time to time permitted.
The operations on the Ancre, however, as well as the minor enterprises and raids to which reference has been made, were carried out as intended. Besides gaining valuable positions and observation by local attacks in the neighbourhood of Bouchavesnes, Sailly-Saillisel and Grandcourt, these raids and minor enterprises were the means of inflicting heavy casualties on the enemy, and contributed very appreciably to the total of 5,384 prisoners taken from him in the period under review.
Operations on the Ancre — The Enemy’s Position
2. At the conclusion of the operations of the 13th November and following days the enemy still held the whole of the Ancre Valley from Le Transloy to Grandcourt, and his first line of defence lay along the lower northern slopes of the Thiepval Ridge. (See Map No. 2.)
North of the Ancre, he still held the greater part of the spur above Beaumont Hamel. Beyond that point the original German front line, in which the enemy had established himself two years previously, ran past Serre, Gommecourt and Monchy-au-Bois to the northern slopes of the main watershed, and then north-east down to the valley of the River Scarpe east of Arras.
Besides the positions held by him on our immediate front, and in addition to the fortified villages of the Ancre Valley with their connecting trenches, the enemy had prepared along the forward crest of the ridge north of the Ancre Valley a strong second system of defence. This consisted of a double line of trenches, heavily wired, and ran north-west from Saillisel past Le Transloy to the Albert-Bapaume Road, where it turned west past Grévillers and Loupart Wood and then north-west again past Achiet-le-Petit to Bucquoy. This system, which was known as the Le Transloy-Loupart line, both by reason of its situation and as a result of the skill and industry expended on its preparation, constituted an exceedingly strong natural defensive position; second only to that from which the enemy had recently been driven on the Morval-Thiepval Ridge. Parallel to this line, but on the far side of the crest, he had constructed towards the close of the past year a third defensive system on the line Rocquigny, Bapaume, Ablainzevelle.
Operations Commenced
3. The first object of our operations in the Ancre Valley was to advance our trenches to within assaulting distance of the Le Transloy-Loupart line.
Accordingly, on the 18th November, 1916, before the rapidly deteriorating condition of the ground had yet made an undertaking on so considerable a scale impossible, an attack was delivered against the next German line of defence, overlooking the villages of Pys and Grandcourt. Valuable positions were gained on a front of about 5,000 yards, while a simultaneous attack north of the Ancre considerably improved the situation of our troops in the Beaucourt Valley.{20}
By this time winter conditions had set in, and along a great part of our new front movement across the open had become practically impossible. During the remainder of the month, therefore, and throughout December, our energies were principally directed to the improvement of our own trenches and of roads and communications behind them. At the same time the necessary rearrangement of our artillery was completed, so as to take full advantage of the opportunities afforded by our new positions for concentration of fire.
The Beaumont Hamel Spur
4. As soon as active operations again became possible, proceedings were commenced to drive the enemy from the remainder of the Beaumont Hamel Spur. In January a number of small operations were carried out with this object by the 3rd, 7th and 11th Divisions (Major-Generals C. J. Deverell, H. E. Watts and A. B. Ritchie), resulting in a progressive improvement of our position. Before the end of the month the whole of the high ground north and east of Beaumont Hamel was in our possession, we had pushed across the Beaucourt Valley 1,000 yards north of Beaucourt Village, and had gained a footing on the southern slopes of the spur to the east.
The most important of these attacks was undertaken at dawn on the morning of the 11th January by the 7th Division, against a system of hostile trenches extending for some 1,500 yards along the crest of the spur east and north-east of Beaumont Hamel. By 8.30 a.m. all our objectives had been captured, together with over 200 prisoners. That afternoon an enemy counter-attack was broken up by our artillery.
Throughout the whole of the month's fighting in this area, in which over 500 German prisoners were taken by us, our casualties were exceedingly light. This satisfactory circumstance can be attributed mainly to the close and skilful co-operation between our infantry and artillery, and to the excellence of our artillery preparation and barrages. These in turn were made possible by the opportunities for accurate observation afforded by the high ground north of Thiepval, and by the fine work done by our aircraft.
Grandcourt
5. Possession of the Beaumont Hamel Spur opened up a new and extensive field of action for our artillery. The whole of the Beaucourt Valley and the western slopes of the spur beyond from opposite Grandcourt to Serre now lay exposed to our fire. Operations were, therefore, at once commenced under the cover of our guns to clear the remainder of the valley south of the Serre Hill, and to push our line forward to the crest of the spur.
On the night of the 3rd/4th February an important German line of defence on the southern slopes of this spur, forming part of the enemy's original second line system north of the Ancre, was captured by our troops (63rd Division, Major-General C. D. Shute) on a front of about three-quarters of a mile. The enemy's resistance was stubborn, and hard fighting took place, which lasted throughout the whole of the following day and night. During this period a number of determined counter-attacks were beaten off by our infantry or dispersed by our artillery, and by the 5th February we had gained the whole of our objectives. In this operation, in which the excellence of our artillery co-operation was very marked, we took 176 prisoners and four machine guns.
This success brought our front forward north of the Ancre to a point level with the centre of Grandcourt, and made the enemy's hold on his position in that village and in his more western defences south of the river very precarious. It was not unexpected, therefore, when on the morning of the 6th February our patrols reported that the last remaining portion of the old German second line system south of the river, lying between Grandcourt and Stuff Redoubt, had been evacuated. The abandoned trenches were occupied by our troops the same morning.
Constant reconnaissances were sent out by us to keep touch with the enemy and to ascertain his movements and intentions. Grand-court itself was next found to be clear of the enemy, and by 10 a.m. on the morning of the 7th February was also in our possession (63rd Division). That night we carried Baillescourt Farm, about half-way between Beaucourt and Miraumont, capturing 87 prisoners.
The Advance against Serre
6. The task of driving the enemy from his position in the Beau-court Valley was resumed on the night of the 10th/11th February. Our principal attack was directed against some 1,500 yards of a strong line of trenches, the western end of which was already in our possession, lying at the southern foot of the Serre Hill. Our infantry (32nd Division, Major-General R. W. R. Barnes) were formed up after dark, and at 8.30 p.m. advanced under our covering artillery barrage. After considerable fighting in the centre and towards the left of our attack, the whole of the trench line which formed our objective was gained, with the exception of two strong points which held out for a few days longer. At 5 a.m. a determined counterattack from the direction of Puisieux-au-Mont was beaten off by our artillery and machine gun fire. Two other counter-attacks on the 11th February and a third on the 12th February were equally unsuccessful.
The Advance towards Miraumont
7. The village of Serre now formed the point of a very pronounced salient, which our further progress along the Ancre Valley would render increasingly difficult, if not impossible, for the enemy to hold. Accordingly, an operation on a somewhat larger scale than anything hitherto attempted since the new year, was now undertaken. Its object was to carry our line forward along the spur which runs northwards from the main Morval-Thiepval Ridge about Courcelette, and so gain possession of the high ground at its northern extremity. The possession of this high ground, besides commanding the approaches to Pys and Miraumont from the south, would give observation over the upper valley of the Ancre, in which many hostile batteries were situated in positions enabling their fire to be directed for the defence of the Serre sector. At the same time arrangements were made for a smaller attack on the opposite bank of the river, designed to seize a portion of the sunken road lying along the eastern crest of the second spur north of the Ancre and so obtain control of the approaches to Miraumont from the west.
Our assault was delivered simultaneously on both banks of the Ancre at 5.45 a.m. on the 17th February by the 2nd, 18th and 63rd Divisions (Major-Generals C. E. Pereira and R. P. Lee commanding respectively the 2nd and 18th Divisions). The night was particularly dark, and thick mist and heavy conditions of ground, produced by the thaw that had just set in, added to the difficulties with which our troops had to contend. The enemy was, moreover, on the alert, and commenced a heavy barrage some time before the hour of our assault, while our attacking battalions were still forming up. None the less, our troops advanced to the assault with great gallantry. On the left of our attack (south of ...