|Battle of Thiepval Ridge|
|Part of the Battle of the Somme of World War I|
|Commanders and leaders|
Crown Prince Rupprecht|
Max von Gallwitz
Fritz von Below
|6 divisions||Three divisions|
|Casualties and losses|
|12,500||2,300 POW, other casualties unknown|
The Battle of Thiepval Ridge[Note 1] was the first large offensive mounted by the Reserve Army of Lieutenant General Hubert Gough during the Battle of the Somme and was intended to benefit from the Fourth Army attack at Morval by starting 24 hours afterwards. The battle was fought on a front from Courcelette in the east, near the Albert–Bapaume road to Thiepval and the Schwaben Redoubt (Feste Schwaben) in the west, which overlooked the German defences further north in the Ancre valley and the rising ground towards Beaumont Hamel and Serre beyond. Thiepval Ridge was well fortified and the German defenders fought with great determination, while the British coordination of infantry and artillery declined after the first day, due to the confused nature of the fighting in the mazes of trenches, dug-outs and shell-craters. The final British objectives were not reached until a reorganisation of the Reserve Army and the Battle of the Ancre Heights (1 October – 11 November). Organisational difficulties and deteriorating weather frustrated General Joseph Joffre's intention to proceed by vigorous co-ordinated attacks by the Anglo-French armies, which became disjointed and declined in effectiveness during late September, at the same time as a revival occurred in the German defence. The British experimented with new techniques in gas warfare, machine-gun bombardment and tank–infantry co-operation, as the German defenders on the Somme front struggled to withstand the preponderance of men and material fielded by the Anglo–French, despite reorganisation and substantial reinforcement of troops, artillery and aircraft from Verdun. September became the month most costly in casualties for the German armies on the Somme.
- 1 Background
- 2 Prelude
- 3 Battle
- 4 Aftermath
- 5 Commemoration
- 6 See also
- 7 Notes
- 8 Footnotes
- 9 References
- 10 External links
Some debate had occurred among the Reserve Army staffs on attack tactics. The II Corps commander Lieutenant-General Claud Jacob advocated attacks by one line, to avoid supporting lines being caught in German counter-bombardments on the British front-line and no man's land, which fell 6–8 minutes after the beginning of British attacks. Jacob considered that the supporting lines played little part in the success of the attack and merely added to casualties. Jacob also advocated afternoon attacks, since the six made by his corps had succeeded and the two dawn attacks had failed. The Reserve Army commander Lieutenant-General Hubert Gough was less certain but did lay stress on the supports crossing the danger zone swiftly. Gough also used the evidence of a film of an attack on 18 September, to decide against infantry advancing in groups, because of their vulnerability to artillery and because German defences in the gaps between groups were unsuppressed, allowing them to cut off the forward infantry and stop the advance of supporting groups and troops on the flanks.
British offensive preparations
The 18th Division moved south after three weeks' battle training in the Third Army area, joining II Corps on 8 September. All company, battalion and brigade commanders reconnoitred the ground and a lecture was given by Brigadier-General P. Howell, the II Corps Chief Staff Officer on the local situation and recent experience, which the divisional unit commanders found helpful, having been in Flanders since August. Two divisional field artilleries were attached to the division and II Corps put a battery of 6-inch howitzers and four tanks at the disposal of the divisional commander, Major-General Maxse. On 21 September the trenches south of Thiepval were taken over from the 49th Division and work begun to prepare them for the attack. Engineer Field Companies, Pioneers and two battalions of infantry dug about 2,500 yards (2,300 m) of assembly and communication trenches, to link them to existing positions which were improved and supply dumps prepared over four nights of digging. The road from Authuille to Thiepval was repaired and hidden behind a brushwood screen, which enabled supplies to be moved up and wounded to be brought down, under very little German shelling. The division arranged a strategem whereby the assembly and Hindenburg trenches were to be left empty after the first waves had advanced and the reserve battalion held back to avoid the German counter-barrage. As soon as the counter-barrage stopped the troops were to advance rapidly in small columns.
British plan of attack
The British Commander General Sir Douglas Haig directed the Reserve Army to attack towards Achiet le Grand and the Third Army to stand ready to attack at Gommecourt as a flank guard. The reserve Army commander Lieutenant-General Sir Hubert Gough ordered the attack for 26 September at 12:35 p.m. to push the Germans off of the high ground of the Thiepval Ridge, from Courcelette 6,000 yards (5,500 m) west to Schwaben Redoubt, by the Canadian Corps under Lieutenant-General Julian Byng and II Corps commanded by Lieutenant-General Claud Jacob, each with two divisions in the attack. Three stages were set, with halts of ten minutes and one hour before the final advance. The Canadian Corps was to provide a flank guard on the right, by taking the German trenches on the spur north-west of Courcelette, the right of II Corps was to take Zollern Redoubt (lang|d|Feste Zollern) in the second stage of the advance and Stuff Redoubt at the final objective on the crest of the ridge. On the left the corps was to take Thiepval in the second stage and then reach Schwaben Redoubt, which overlooked the slope down to St Pierre Divion. It was emphasised that the Germans were to be driven off all the crest, to deny the Germans observation towards Albert and gain British ground observation of the Ancre valley. The German front line west of Thiepval was to be captured during the advance.
About 230 heavy guns, howitzers and mortars with 570 field guns and howitzers were available, the guns of V Corps north of the Ancre, being used to fire on the German river crossings and trenches on the south bank from behind. II Corps artillery was to pay special attention the demoralisation of the German redoubts and Thiepval, while certain German trenches intended for the British infantry to occupy were not bombarded for destruction. Two changes were introduced into the artillery plan, gas shell was to be fired by 4-inch mortars and the machine-guns of both attacking Corps were arranged to fire overhead barrages into the gaps between the artillery barrage lines. The creeping barrage was to move at 100 yards (91 m) in three minutes, then at 100 yards (91 m) in two minutes, when no man's land and the German front position had been crossed. Six of the eight tanks available were allotted to II Corps. Divisional reliefs were to be delayed to keep the attacking troops fresh, beginning on the night of 22/23 September on the right and 24/25 September on the left. Zero hour was set for the afternoon instead of dawn, because Maxse wanted only three hours of daylight for the consolidation on the final objective, so that most of the work would be done after dark, to avoid exposure to observed artillery fire. The Thiepval attack was to be followed by an attack astride the Ancre River. Orders for the capture of more objectives and to gain ground at every opprtunity were issued on 28 September, intended to combine with the Fourth Army attacks planned for early October, which became known as the Battle of Le Transloy; Stuff and Schwaben redoubts were to be captured by 29 September and Stuff Trench by 1 October.
German defensive preparations
The front line troops of the 7th, 8th and 26th Reserve divisions from Courcelette west to Thiepval, (which was held by two regiments, one attached from the 2nd Guards Reserve Division) and the ground from Thiepval to St Pierre Divion, (held by a regiment detached from the 52nd Division).  The German front position on the south face of Thiepval was about 300 yards (270 m) in front of the village; about 1,000 yards (910 m) back was the second line, Staufen Riegel ("Stuff Trench" to British troops and "Regina Trench" to the Canadians) about 1,000 yards (910 m) and another 1,000 yards (910 m) further back was the third line, Grandcourt Riegel (Grandcourt Trench). The cellars under Thiepval Chateau had been extended into a complex of tunnels, used as storehouses and shelters. A sunken road running up the middle of the village to the cemetery had been lined with dug-outs and in the original front-line to the west were 144 deep dug-outs. Thiepval had been held by Württembergisches Infanterie-Regiment Nr. 180 since 1914 which still contained many pre-war trained soldiers. The regiment had not been moved and was allowed to make its own arrangements, using Bapaume as a base. Zollern Redoubt guarded the first line between Courcelette and Thiepval; Staufen (Stuff) and Schwaben redoubts anchored the west end of the first and second lines. Mouquet Farm to the east of Thiepval had become dangerously isolated, 350 yards (320 m) beyond any support trenches, connected only by a half-demolished trench. The losses incurred in its defence weakened the garrison in the area for little corresponding gain. Beyond the south-west of Thiepval, the original German front position ran north to St Pierre Divion and the Ancre. The German garrisons were alerted that an attack was imminent on 22 September and German artillery began harassing fire on British trenches and supply dumps. The British assembly for the attack early on 26 September went undisturbed.
(23–30 September 1916)
|23 September||0||66°–43°||fine, warm|
|24 September||0||72°–45°||mist then sunny|
|27 September||0.1||72°–52°||overcast, wet|
|28 September||1||73°–54°||fine, showers|
|29 September||17||61°–54°||wet, windy|
|30 September||0||63°–41°||fine, overcast|
are taken from Gliddon, G.
When the Barrage Lifts (1987)
The preliminary bombardment began on 23 September in poor visibility and mist rose morning and evening for the next few days. II Corps fired 60,000 field artillery and 45,000 heavy artillery rounds. On the afternoon of 24 September a detachment of the Special Brigade fired 500 lachrymatory shells into Thiepval, which silenced German trench mortars by 5:00 p.m. A preliminary operation to capture Mouquet Farm began on the evening of 24 September, when a company from the 11th Division reached the farm, before a German bombardment and a bombing attack covered by accurate machine-gun fire forced the British back. The creeping barrage began at 12:35 p.m. prompt on 26 September and the infantry began their advance.
26 September On the right flank, the Canadian Corps[Note 2] attacked with the 6th Brigade of the 2nd Canadian Division on the right, as flank guard and the 1st Canadian Division on the left. At 12:35 p.m. the 6th Brigade attacked behind a creeping barrage with three battalions and two tanks attached, though a German counter-barrage kept the right-hand battalion in its trenches. Both tanks were lost early but the 29th Battalion in the centre reached the German front line in ten minutes, while the left battalion was stopped by machine-gun fire from ahead and the left flank, except for a few troops on the right. At 10:50 p.m. the objective was captured from Twenty Road, west to the east end of Miraumont Road and held against two counter-attacks during the night.
The 1st Canadian Division attacked with two brigades. The right brigade with two battalions advanced 400 yards (370 m) to Sudbury Trench and resumed the advance at 1:00 p.m., reaching Kenora Trench on the right which ran north-west back to Regina/Stuff Trench by 2:40 p.m. The battalion on the left had been delayed and German bombers counter-attacked the flank and were repulsed. The left battalion had formed up in no man's land to escape the German counter-barrage but had a harder fight to reach their objectives, taking until mid-afternoon to reach the second objective just short of the ridge crest, linking with the left brigade later. The left brigade advanced with two reinforced battalions, which received machine-gun fire from the left flank but reached Zollern Trench, taking the western part after a delay. At 1:00 p.m. the advance resumed to Hessian Trench, which was taken easily. Touch was gained with the right brigade but troops from the 11th Division on the left were not found. The Canadians bombed down Zollern Trench and built a barricade, as machine-gun fire forced a slight withdrawal from the left part of Hessian Trench, a defensive flank being thrown back from Hessian to Zollern Trench and dug in by 10:30 p.m..
West of the Canadian Corps, II Corps attacked with the 11th and 18th divisions. The 11th Division advanced with two brigades. The 34th Brigade on the right attacked with two battalions, with a bombing party attacking Mouquet Farm just before zero and guarding the dug-out exits. Both battalions got to the German support trench, (first objective) although one of the supporting battalions was caught by the German counter-barrage at the British front-line. The right-hand battalion became bogged down fighting through Zollern Redoubt and most of the moppers-up were killed. About 50 survivors dug in on the right facing Zollern Trench, while others sheltered to the west of the redoubt. The left battalion was caught by machine-gun fire from Zollern Redoubt and Midway Line, which ran from Mouquet Farm to Schwaben Redoubt, north of Thiepval. A few troops reached Zollern Trench and the remnants of the support battalion advanced to reinforce them. The battle for Mouquet Farm continued; two attached tanks ditched nearby but the guns from one were removed and the crew carried on. Reinforcements were sent forward (including a pioneer battalion) and at 5:30 p.m. the last 56 Germans surrendered, after being attacked with smoke bombs. The 33rd Brigade on the left attacked from Nab Valley with two battalions, reached Joseph Trench at 12:45 p.m. and advanced to Schwaben Trench between Mouquet Farm and the east end of Thiepval where they dug in. Zollern Trench was reached by 1:30 p.m. and Hessian Trench by 4:00 p.m. except for the 250 yards (230 m) on the right. Touch was gained on the left with the 18th Division at Zollern Trench and Midway Line was mopped up by a reserve battalion which also reinforced Hessian Trench, repelling a German counter-attack on the right.
The 18th Division attacked with two battalions of the 53rd Brigade on the right from Nab Valley with a battalion following-on. The plan to avoid the German counter-barrage worked and the first objective, at Schwaben Trench on the right and the Pozières–St.Pierre Divion road on the left, was reached in 12 minutes. Two tanks advanced in support but quickly ditched as the battalions advanced again, reaching Zollern Trench by 1:15 p.m. against slight resistance, before being stopped by German machine-gun fire after another 250 yards (230 m) and falling back to Zollern Trench at dark, when an attempt to bomb forward was made. The 54th Brigade attacked on a narrow 300 yards (270 m) front, with one battalion going through the village, a company advancing along the original German front line and with the other two battalions in support and reserve following on. The advanced troops moved forward before zero hour to avoid the German artillery and two tanks advanced from Caterpillar Copse. The advance through Thiepval went slowly, being held up by machine-gun fire from the Chateau ruins, until a tank came up and suppressed the German machine-guns, before ditching a short time later. The infantry lost the barrage but fought on through the village until by 2:30 p.m., all but the north-west corner was captured.
27 September After a German artillery bombardment on the 6th Brigade, 2nd Canadian Division all night and the morning, patrols found that the Germans had withdrawn and the brigade advanced to the German practice trenches up Dyke Road, running north-east from Courcelette and occupied the rest of the first objective. The 1st Canadian Division was counter-attacked at Kenora Trench in the early hours and were forced back until an attack re-occupied the trench. Around 6:00 p.m. a German bombing attack nearly retook the trench, until repulsed at the last moment and later the Canadians withdrew to the support trench and then made a counter-attack at 2:00 a.m. which failed. In II Corps, the 11th Division found the Zollern Redoubt empty. Zollern Trench was occupied west to the junction with Midway Line and east to link with the Canadians. An advance due at 10:00 a.m. was stopped by machine-gun fire from Stuff Redoubt and Hessian Trench. The 32nd Brigade in reserve was ordered to continue the attack at 3:00 p.m.; the attack was postponed but one of the two battalions attacked and reached the south side of Stuff Redoubt; an hour later Hessian Trench to the west was captured and at 9:00 p.m. a battalion began bombing forward from Zollern Redoubt to the north-west. The left brigade attacked eastwards during the morning, linked with the 34th Brigade and at 3:00 p.m. the rest of Hessian Trench was occupied. The 53rd Brigade on the right of the 18th Division, consolidated Zollern Trench and then took part of Bulgaren Trench behind a Stokes mortar barrage. Reliefs were completed quickly in the 54th Brigade on the left and the attack through Thiepval resumed at 5:45 a.m., in company with a 146th Brigade battalion of the 49th Division, in the original British front line west of Thiepval. All of Thiepval had been captured by 11:00 a.m. and touch gained with the 53rd Brigade, 146th Brigade being relieved by a 25th Division brigade overnight.
28 September A cavalry patrol moved forward on the right of the 6th Brigade, 2nd Canadian Division at dawn but was quickly stopped by machine-gun fire. The brigade dug in facing north-east beyond the German practice trenches and a battalion advanced north up Courcelette Trench, meeting much German machine-gun fire from Regina Trench. Two more attempts were made in the afternoon and in the evening at 8:30 p.m. which failed. During the night, the four Canadian brigades engaged were relieved by the 4th and 8th brigades. In II Corps the 32nd Brigade took over on the right of the 11th Division ready to take Stuff Redoubt and Hessian Trench at 6:00 p.m. but the attack was delayed. A bombing attack into the rest of Stuff Redoubt gained ground but this was later abandoned. The 18th Division was to attack Schwaben Redoubt at 1:00 p.m., the right brigade along Zollern Trench to Midway Line while an extra battalion attacked the redoubt and a battalion from the 54th Brigade attacked on the left, down to the front line. Bulgar Trench was taken quickly but the Germans in Midway Line held out longer. By 2:30 p.m. the east end of Schwaben Redoubt was approached and touch was gained on the right with the 11th Division. Troops later reached the south-west corner of the redoubt and by 5:00 p.m. the south side of the redoubt had been captured and linked with the troops in Midway Line to the right, as the left gained touch with mixed groups from the 54th Brigade. The west of the redoubt was taken by 8:00 p.m. and patrols from the 49th Division occupied parts of the German front line, then met the troops on the left of the 54th Brigade. Grenade skirmishes occurred intermittently during the night and a battalion from the 55th Brigade took over the front of the 54th Brigade.
29–30 September The 8th Brigade from the 3rd Canadian Division attacked at noon with the 11th Division on the left and reached Hessian Trench in places, which were lost and then regained during heavy German shelling and counter-attacks. In II Corps the 11th Division attacked Stuff Redoubt and Hessian Trench to the right, most of which was captured and touch gained with the Canadians, while the attack on the redoubt failed. After battalion reliefs in the 18th Division a bombing fight began around 7:30 a.m.along the western edge of Schwaben Redoubt which lasted all day, the ground gained could not be held and the battalion later relieved troops in the captured German front system. On 30 September the 11th Division resumed the attack on Stuff Redoubt at 4:00 p.m. with bombing parties advancing west along Hessian Trench and along Zollern Trench, which by nightfall had taken the southern half of the redoubt. Canadian bombers assisted the capture of Hessian Trench and the division was relieved by the 25th Division overnight. A dawn counter-attack drove the 18th Division from the south and west sides of Schwaben Redoubt; the south side was recaptured and the north side of the redoubt was captured at 4:00 p.m. Another German attack at 9:00 p.m. retook the north face, up to the entrance to Stuff Trench on the right.
4 Squadron and 7 Squadron made a number of low reconnaissance flights to observe the condition of the German wire and trenches before the attack.[Note 3] GHQ Wing and Corps squadron air observers on contact patrol, watched the infantry advance behind the creeping barrage and enter Thiepval with two tanks, which prompted some German soldiers to run away. At 1:10 p.m. British troops were photographed in Hessian Trench and air observers were able to report the capture of Thiepval, save for the north-west corner. Artillery observers in aircraft and observation balloons reported 64 active German batteries in the first 24 hours and identified the positions of 103 more. Ground observers were able to engage six German batteries but air observation allowed another 22 to be bombarded. South of Miraumont a 4 Squadron air observer reported approximately 1,000 German troops on the road, who were scattered by British heavy artillery. The squadrons of IV and V Brigades dropped 135 x 20-pound bombs on trenches, artillery and billets as III Brigade bombed Lagnicourt aerodrome despite poor visibility and attacked German kite balloons, 60 Squadron Nieuports shooting down two with Le Prieur rockets and bombing grounded balloons with phosphorus bombs. 19 Squadron attacked a German divisional headquarters at Barastre with 64 x 20-pound bombs. Two German aircraft were shot down and four damaged for the loss of one British aircraft over Bapaume but the faster German machines were able to avoid contact at will.
Next day British offensive patrols met numerous German formations in the morning, before heavy rain interrupted flying. Six aircraft of 27 Squadron were attacked by five Albatros D.I of Jasta 2 led by Boelcke, which shot down three and damaged one of the Martinsydes.[Note 4] Another British aircraft was lost on an early morning railway reconnaissance by 70 Squadron. On 28 September V Brigade aircraft reported the British advances at Schwaben Redoubt and directed artillery fire on 31 gun pits and blew up nine ammunition stores. Few German aircraft appeared but two were shot down and two damaged, one of the aircraft being shot down by a new Spad flown by a pilot of 60 Squadron. Poor weather grounded most aircraft on 29 September but next day was clear, 500 air photographs were obtained and low reconnaissance observed the state of German trenches and wire. With the capture of Stuff Redoubt and most of Schwaben Redoubt, the denial of air observation to the Germans became more important and eleven aircraft raided Lagnicourt aerodrome again, escorted by 11 Squadron and 60 Squadron. Many German aircraft were able to take off and attack the British aircraft as they returned, three German aircraft being shot down and one damaged for a loss of one F.E. 2b.
German First Army
The 7th Division near Courcelette had all three regiments forward, a battalion each in the front, support and reserve lines. The front trenches next to the Albert–Bapaume road were lost quickly, while the 72nd Regiment in the centre held its ground and the right-hand regiment was pushed back slowly, having managed to ambush the Canadians by occupying Fabeck Graben (Fabeck Trench) in no man's land, which the British artillery planners had ignored, thinking that it was derelict. The Germans were quickly outflanked and the fifty survivors surrendered at 12:55 p.m. The Canadians pressed forward on both flanks and quickly overran Zollern Graben (Zollern Trench). By 1:30 p.m. the 72nd Regiment had both flanks in the air, when reinforcements from the support battalion made a defensive flank along the sunken part of the Courcelette–Miraumont road, south of Staufen Riegel (Stuff Trench) and the rest joined the 393rd Regiment on the left flank. At dusk the British artillery turned Zollern Graben into a moonscape, while British aircraft machine-gunned the trench from 150 feet (46 m). A Canadian attack was repused and a second attempt at midnight was stopped with the help of reinforcements. The Canadians had pressed forward on both flanks and got round either side of Zollern Graben and the east end of Hessen Weg, (Hessian Trench) which fell when the front and support battalions of the 26th Regiment were annihilated, few soldiers making it back to Staufen Riegel, to hold the 1,700 yards (1,600 m) of the trench that the regiment was responsible for but they managed to stop the Canadian advance all afternoon, except for the loss of 200 yards (180 m) of the trench near the Courcelette–Grandcourt road. After dark the 7th Division withdrew south to Staufen Riegel and east to cover Pys in the Feste Below (Below Position).
The 93rd Regiment of the 8th Division held from Zollern Redoubt and part of Zollern Riegel to the east edge of Thiepval with supports in Hessen Weg and Staufen Riegel. The 165th regiment continued the line west along Mouquet Riegel (Mouquet Trench) to the Thiepval–Pozières road, with a company in Mouquet Farm and the support battalions in Feste Grüne ("Green Redoubt"), (Midway Line) Hessen Weg and Staufen Riegel and the 153rd Regiment held Grosser Riegel from the Pozières road to the east edge of Thiepval with the supports in Schwaben Riegel and Hessen Weg. The defence of the 153rd Regiment on the outskirts of Thiepval collapsed, when three tanks appeared, proving to be immune to machine-gun fire and hand-grenades. All one and a half battalions of German troops in the area of Grosser Riegel (Big Trench) and Schwaben Riegel, were overrun by British infantry, hardly any escaping. Dust and smoke from the artillery hung in the air during the afternoon and shrouded the British infantry advance to Hessen Weg, where two reserve companies held them up. The German defence on either side was outflanked, on the left Mouquet Farm was surrounded (and held out until 6:00 p.m.) . Mouquet Riegel was captured, the 165th Regiment to the left being forced back along Feste Grüne. The Germans in Zollern Redoubt held on, helped by an accurate counter-barrage falling 150 yards (140 m) beyond. A British artillery battery which tried to unlimber 1,000 yards (910 m) to the south-west was knocked out with machine-gun fire. After another bombardment the British resumed the attack at 3:00 p.m. and were repulsed. Canadian troops advancing to the left began to threaten the left flank as British troops get past on the right then caused the survivors to withdraw to Hessen Weg. During the night Staufen Riegel was made the first line and ground still occupied in front of it was to be held by advanced posts. By early morning the new divisional front line had been established between Hessen Weg and Staufen Riegel, touch on the left being gained at the Grandcourt–Courcelette road with the right of the 7th Division and the right being exended to the Feste Grüne.
Infantry Regiment 180 of the 26th Reserve Division held Thiepval with part of the 77th Reserve Regiment; Schwaben Redoubt and the old front line north-west to St. Pierre Divion were held by the 66th Regiment. The support and reserve battalions were in Schwaben Riegel, Feste Grüne and Staufen Riegel. The digging of British assembly trenches was seen before the attack, alerting the defenders and the first two waves of British infantry were shot down. A tank appeared from Authuille Wood leading a third wave, which collected survivors of the first two and came close to the German position, just as the 180th Regiment companies on the south and west sides of the Thiepval defences, were attacked from behind by British bombers moving west. Some British troops reached Bulgaren Weg (Bulgar Trench) behind Thiepval, where the support companies managed to stop the British moving further west. In 30 minutes the British had also reached Feste Grüne and probed beyond Hessen Weg. At 6:30 p.m. a carrier pigeon arrived at the 26th Reserve Divisional headquarters, with a message that eighteen men were left in the I Battalion dug-out. The Thiepval garrison lost about 75% casualties and the survivors rallied astride the Thiepval–Grandcourt road, from Hohen Weg and Bulgaren Weg to the Feste Grüne.
Careful planning for the combined attack at Morval was necessary due to the French Sixth Army[Note 5] advance diverging east and north-east. The new attack northwards to keep touch with the British needed reinforcements of troops and artillery, which were taken from the Tenth Army further south. Artillery and aircraft were brought from Verdun and XXXII Corps took over on the right of I Corps. The Sixth Army was to advance 3,000 yards (2,700 m) close to the line Moislains–Le Transloy. Foch intervened on 25 September to ensure that I and XXXII Corps attacked north to Sailly-Saillisel, with V Corps as right flank guard. The big attacks on the afternoons of 26 and 27 September took little ground in the face of very heavy German artillery fire. Fayolle concluded that an extensive artillery preparation would be needed before resuming the attack.
German accounts of the battle conclude that the break-ins north-west of Courcelette and just east of Thiepval led to the defeat. Lack of reserves forced the 7th Division to retreat in the east and the success of the British 11th Division allowed Thiepval to be outflanked from the right, with the loss of the village and most of the garrison, the British advancing 1,000–2,000 yards (910–1,830 m) on the 6,000 yards (5,500 m) of front attacked. The British pushed on in the next days towards Stuff and Schwaben redoubts, where the Germans were eventually dislodged in the Battle of the Ancre Heights which began on 1 October. Apart from here and at Sailly-Saillisel in the French Sixth Army area, Bazentin ridge had been captured, giving ground observation of the upper Ancre river and the spurs and valleys on the north bank. The British made better use of their artillery, while German artillery ammunition consumption in September rose to 4.1 million shells from 1.5 million in August but had less effect, much of the ammunition being used inefficiently on unobserved area bombardments, while defensive barrage fire was limited to three minute periods; up to 25% of the German guns became unserviceable in battle due to mechanical failure.
1st Canadian Division losses, 1–30 September: 6,254, 11th Division losses, 26–30 September: 3,615, about 70% being wounded. The casualties of the 18th Division were 4,000. German losses are uncertain but September is considered to be the most costly month of the battle, with approximately 135,000 casualties. Approximately 2,300 German prisoners were taken of around 10,000 captured by the Reserve Army 14–30 September along with 27 guns, 200 machine-guns and 40 trench mortars.
British operations concluded on 30 September with the capture of a large portion of the Schwaben Redoubt, north of Thiepval, another first day objective that had been the site of fierce fighting by the 36th (Ulster) Division. In the Battle of the Ancre Heights, which began on 1 October, the final objectives of the Battle of Thiepval were reached; on 14 October the rest of Schwaben Redoubt was captured and the Canadian Corps took Regina Trench on 11 November.
Because of the significance that the positions at Thiepval took on in being a first-day objective that was not captured until almost three months later in the Battle of the Somme, the high ground on the point of the Thiepval Spur was selected to be the location of the Anglo-French memorial to the "missing of the Somme". The impressive and massive Thiepval Memorial to the Missing of the Somme is dedicated to the men who were killed and whose bodies were never recovered in during the fighting in the vicinity from 1916 to 1918. The piers of the memorial bear the names of over 72,000 British soldiers who were killed on the Somme battlefields "but to whom the fortunes of war denied the known and honoured burial given to their comrades in death".
- List of Canadian battles during World War I
- Ulster Tower Thiepval
- After the end of the Battle of Flers–Courcelette on 22 September, the Anglo-French armies tried to press their advantage, with several smaller attacks in quick succession, rather than pause to regroup and give the German armies time to recover. Subsequent periodisation has given discrete dates for the Anglo-French battles but there were considerable overlaps and continuity of operations, until the weather and supply difficulties in mid-November ended the battle until the new year. The British Official History continues the narrative to 30 September, despite dating the battle from 26–28 September.
- Where a national contingent is named, sub-units should be considered to be of the contingent except where indicated.
- Air observers could identify troops from 700 feet (210 m) and in good light could distinguish occupied trenches from 2,000 feet (610 m).
- By the beginning of the Battle of the Somme, the Imperial German Flying Corps (Die Fliegertruppen des deutschen Kaiserreiches/Die Fliegertruppen) had received a few Halberstadt D.II and LFG Roland D.I which outclassed the Royal Aircraft Factory B.E.12, Morane-Saulnier L and other older British and French designs. The Albatros D.II began to equip Jastas, new specialist German fighter squadrons formed from August 1916.
- Military units after the first one mentioned are French unless specified.
- Griffith 1996, pp. 75–76.
- Nichols 1922, pp. 78–83.
- Miles 1938, pp. 391–393.
- Farndale 1986, p. 154.
- Nichols 1922, pp. 79–83.
- Nichols 1922, p. 81.
- Miles 1938, pp. 391–394.
- Miles 1938, pp. 412 & 420.
- Miles 1938, p. 394.
- Duffy 2007, p. 239.
- Rogers 2011, pp. 124–125.
- Gliddon 1987, pp. 419–421.
- Nichols 1922, p. 82.
- McCarthy 1995, p. 119.
- McCarthy 1995, pp. 119–120.
- McCarthy 1995, p. 122.
- McCarthy 1995, pp. 122–123.
- McCarthy 1995, p. 123.
- McCarthy 1995, pp. 123–124.
- McCarthy 1995, pp. 124–125.
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- Thiepval Memorial FirstWorldWar.com
- Thiepval Memorial to the Missing at greatwar.co.uk
- Thiepval Memorial at webmatters.net
- Battle of Thiepval Ridge, 26-30 September 1916 at historyofwar.org
- Canadian Expeditionary Force 1914–1919, Official History of the Canadian Army in the First World War
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