L'îlot de La Boisselle
L'îlot de La Boisselle is a small, historic site in the commune of Ovillers-la-Boisselle in the Somme department in Picardie in northern France. L'îlot was heavily fought over during the First World War, when it was known as Granathof to the Germans and as Glory Hole to British soldiers. The site is private property and open to the public by appointment with Claudie LLewellyn.
Geography
Located in the small village of La Boisselle, the site lies south of the D 929 Albert–Bapaume road and occupies a small area in the south-east of the village . Once the location of a small number of houses, L'îlot is now covered with grass and shrubs and separated from the built over areas of the village by the rue Georges Cuvillier leading to Contalmaison in the north and the route de Bécourt leading to Bécordel-Bécourt in the east.History
La Boisselle is a settlement dating back to pre-Roman times. The D 929 Albert–Bapaume road follows the course of a Roman road. After the Battle of Bapaume during the Franco-Prussian War, the village suffered serious damage. A farmstead that existed on the present L'îlot site was ruined during the war and eventually demolished in 1883 by its owners, the Berchon family. The farm was later rebuilt and expanded before the First World War; it was a place of armed struggle during the first war on surface trenches and in depth with mining galeries and mines explosions opposing french then British troops against German troops. It shows several mine craters and a mining galerie. The terrain was never modified after WW1.1914
During the Battle of Albert, French units were forced back from Bapaume but were able to stop the German advance along the D 929 Albert–Bapaume road at La Boisselle. After their advance had been brought to a halt, the Germans brought in heavy artillery and began to shell the French, who withdrew their infantry from the village but soon began to fortify their remaining positions with underground works. On 18 December, a French attack captured the village cemetery at the west end of a German salient in La Boisselle. The French had sapped forward for several weeks and a shortage of artillery ammunition had left the Germans unable to stop the French progress. When the attack came, the French were only from the German front line and then established an advanced post only away. The French attacks forced the Germans back from the village cemetery and the western area of La Boisselle by 24 December, but the advance was stopped a short distance forward at L'îlot, in front of German trenches protected by barbed wire. On Christmas Day 1914, French engineers began to sink the first mine shaft at La Boisselle. Local but heavy fighting underground in the winter of 1914 and spring of 1915 also took place at nearby Fricourt, Bois Français and Carnoy.The Germans, meanwhile, remained in the ruins of La Boisselle and fortified the ground they had gained with barbed-wire entanglements so that the front trench could be held with fewer troops. No man's land around La Boisselle varied from wide, the area of L'îlot being the narrowest part. The site thus became part of the Western Front, a line that stretched from the North Sea to Switzerland and which remained essentially unchanged for most of the entire war. As a result of bloody and costly fighting for its occupation in late 1914, L'îlot de La Boisselle quickly attained a profound symbolic status with the French Breton and German troops.
1915
From January 1915 to the start of the Battle of the Somme in July 1916, L'îlot was the scene of fierce underground fighting. Having started mining at La Boisselle shortly after the French, the Bavarian Engineer Regiment 1 continued digging eight galleries towards L'îlot. On 5 January, French sappers were heard digging near a gallery and a camouflet was quickly placed in the gallery and blown, collapsing the French digging and two German galleries in the vicinity. A charge was blown on 12 January, which killed more than forty French soldiers. On the night of three more German mines were sprung close to L'îlot. After the explosions, a large party of German troops advanced and occupied the demolished buildings but were not able to advance further against French artillery and small-arms fire. At a French counter-attack drove back the Germans and inflicted about For several more days both sides detonated mines and conducted artillery bombardments, which often prevented infantry attacks. On the night of a German sapper at La Boisselle inadvertently broke into French gallery, which was found to have been charged with explosives; a group of volunteers took racking minutes to dismantle the charge and cut the firing cables. Between April 1915 and January 1916 alone, sixty-one mines were sprung around L'îlot, some with of explosives.In summer 1915, the French mine workings around La Boisselle were taken over by the Royal Engineers as the British moved into the Somme front. G.F. Fowke sent the 174th and 183rd Tunnelling Companies into the area, but at first the British did not have enough miners to take over the large number of French shafts; the problem was temporarily solved when the French agreed to leave their engineers at work for several weeks. On 24 July 1915, 174th Tunnelling Company established headquarters at Bray, taking over some 66 shafts at Carnoy, Fricourt, Maricourt and La Boisselle. After the Black Watch arrived at La Boissselle at the end of July 1915, existing trenches, originally dug by the French, were renamed by the Scottish troops which explains the presence of many Scotland-related names for the Allied fortifications in that front sector. To provide the tunnellers needed on the Somme front, the British formed the 178th and 179th Tunnelling Companies in August 1915, followed by the 185th and 252nd Tunnelling Companies in October. The 181st Tunnelling Company was also present on the Somme.
At La Boisselle, elaborate precautions were taken to preserve secrecy, since no continuous front line trench ran through L'îlot, which was defended by posts near the mine shafts. No man's land just south-west of La Boisselle was very narrow, at one point about wide, and had become pockmarked by many chalk craters. The underground war continued with offensive mining to destroy opposing strong points and defensive mining to destroy tunnels, which were long. Around La Boisselle, the Germans dug defensive transverse tunnels about long, parallel to the front line. In addition to digging defensive tunnels to obstruct German mining and creating offensive galleries aimed at destroying German fortifications, the Royal Engineers also dug deep wells to supply the troops with drinking water.
In August 1915, the French and Germans were working at a depth of ; the size of their charges had reached. The British tunnelling companies dramatically increased the scale of mining operations by extending and deepening the system, first to and ultimately. In October 1915, the 179th Tunnelling Company began to sink a series of deep shafts in an attempt to forestall German miners who were approaching beneath the British front line. At W Shaft they went down from to and began to drive two counter-mine tunnels towards the Germans. From the right-hand gallery the sounds of German digging grew steadily louder. On 19 November 1915, 179th Tunnelling Company's commander, Captain Henry Hance, estimated that the Germans were 15 yards away and ordered the mine chamber to be loaded with of explosive. This was completed by midnight from 20–21 November. At 1.30 am on 22 November, the Germans blew their charge, filling the remaining British tunnels with carbon monoxide. Both the right and left tunnels were collapsed, and it was later found that the German blow had detonated the British charge. The wrecked tunnels were gradually re-opened, but about thirty bodies still lie in the tunnels beneath La Boisselle.
1916
On the First day of the Somme, 1 July 1916, the D 929 Albert–Bapaume road was to be the main axis of the Allied attack. The British infantry was to attack with a gap at La Boisselle, which could not to be attacked directly as the deeply-cratered ground around L'îlot made direct assault on the ruined village impossible. The tunnelling companies were to make two major contributions to the Allied preparations for the battle by placing 19 large and small mines beneath the German positions along the front line and by preparing a series of shallow Russian saps from the British front line into no man's land, which would be opened at Zero Hour and allow the infantry to attack the German positions from a comparatively short distance.At La Boisselle, two mines with charges were planted at L'îlot, at the end of galleries dug from Inch Street Trench by the 179th Tunnelling Company. To assist the attack on the village, two further mines, known as Y Sap and Lochnagar after the trenches from which they were dug, were placed to the north-east and the south-east of La Boisselle. These four mines were detonated by the Royal Engineers at on 1 July 1916, two minutes before Zero Hour and 15 other mines were fired along other sectors of the Somme front line.
The British attack on the ruins of La Boisselle on 1 July 1916 turned into a disaster: Despite their colossal size, the Lochnagar and Y Sap mines failed to help sufficiently neutralise the German defences in the village, and the German troops had deep shelters that withstood the British artillery fire. La Boisselle was meant to fall in 20 minutes, but by the end of the first day of the battle, neither La Boisselle nor Ovillers had been taken while the III Corps divisions had lost more than. At Mash Valley, the attackers lost 5,100 men before noon, and at Sausage Valley near the crater of the Lochnagar mine, there were over 6,000 casualties – the highest concentration on the entire battlefield. The III Corps' 34th Division suffered the worst losses of any unit that day. On 2 July, the British managed to cross L'îlot, capture the German front line trench, occupy the west end of the ruined village by and to dig in near the church. The next day, the British gradually managed to drive the German units from La Boisselle, which was fully in Allied hands by 6 July. As the Allied advance continued down the D 929 Albert–Bapaume road until the end of the Battle of the Somme in mid-November, L'îlot de La Boisselle became redundant. Barton estimates that over 120 British and French miners died in the underground fighting on the site.