Knowledge (XXG)

Y Sap mine

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sideways in the repercussing air. The earthly column rose, higher and higher to almost four thousand feet. There it hung, or seemed to hang, for a moment in the air, like a silhouette of some great cypress tree, then fell away in a widening cone of dust and debris. A moment later came the second mine. Again the roar, the upflung machine, the strange gaunt silhouette invading the sky. Then the dust cleared and we saw the two white eyes of the craters. The barrage had lifted to the second-line trenches, the infantry were over the top, the attack had begun.
155: 55: 1249: 1429: 1282: 1380:. Because the Germans had built tunnels 30–120 ft (9.1–36.6 m) deep and transverse defensive galleries 80 ft (24 m) deep and parallel to the German front line, the gallery could not be dug in a straight line. The gallery was dug about 500 yd (460 m) into no man's land, then doglegged to the right for about another 500 yd (460 m). About 40,000 lb (18 long tons; 18 t) of ammonal was placed in the chamber under Y Sap (the 1175: 140: 1462: 1239:
headquarters at Bray, taking over some 66 shafts at Carnoy, Fricourt, Maricourt and La Boisselle. No man's land just south-west of La Boisselle was very narrow, at one point about 50 yd (46 m) wide, and had become pockmarked by many chalk craters. Elaborate precautions were taken to preserve secrecy, since no continuous front line trench ran through the area opposite the west end of La Boisselle and the British front line.
1446:. Y Sap and Lochnagar mines were the largest mines ever detonated. The blast was the largest man-made sound in history and some reports said that it could be heard from London. The explosion of Y Sap mine left a large crater but failed to assist the British attack at Zero Hour as the Germans had detected the mine in time, evacuated the position and caught the British infantry in crossfire, particularly the troops of the 198: 1207:, some loaded with 20–25 long tons; 44,000–55,000 lb (20,000–25,000 kg) of explosives. At the end of July 1915, fresh troops were observed moving into the French positions north of the Somme and on 1 August, they were identified at Thiepval Wood as British soldiers ("dressed in brown suits"). 1528:
apparatus eavesdroppers, who warned of the attack, enabled the Germans to vacate the underground shelters near Y Sap in time and shoot down the infantry of the fourth brigade column. La Boisselle was meant to fall within twenty minutes but it was captured by the British and re-captured by the Germans
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the charge. Lochnagar and Y Sap mines were overcharged to ensure that large rims were formed from the disturbed ground and communication tunnels were also dug for use immediately after the first attack. The mines were laid without interference by German miners but while the ammonal was being placed,
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to allow the infantry to attack the German positions from a much shorter distance. At La Boisselle, four mines were prepared by the Royal Engineers, two charges (No 2 straight and No 5 right) were planted at L'îlot at the end of galleries dug from Inch Street Trench by the 179th Tunnelling Company,
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The underground war continued with offensive mining to destroy opposing strong points and defensive mining to destroy tunnels, which were 30–120 ft (9.1–36.6 m) long. Around La Boisselle, the Germans dug defensive transverse tunnels about 80 ft (24 m) long, parallel to the front
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and attempts to resume mobile warfare in October failed. Both sides reduced their attacks to local operations or raids and began to fortify their remaining positions with underground works. On 18 December, the French captured the La Boisselle village cemetery at the west end of a German salient and
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The detonation of Y Sap and Lochnagar mines failed to neutralise the German defences in La Boisselle. The mines were expected to provide some protection against German machine-gun fire, by creating mounds around the crater rims and a smoke screen was to cover La Boisselle at zero hour but the wind
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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 behind for several weeks. On 24 July, the 174th Tunnelling Company established
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We were over Thiepval and turned south to watch the mines. As we sailed down above all, came the final moment. Zero! At Boisselle the earth heaved and flashed, a tremendous and magnificent column rose up into the sky. There was an ear-splitting roar, drowning all the guns, flinging the machine
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thirty minutes before the infantry advance, which meant that its fire for the rest of the day was ineffective. Field artillery and field howitzers were left to suppress the German defenders for the last thirty minutes but had little destructive power against field fortifications. The German
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and prevent enfilade fire from it during the British attack. The crater could be occupied by the British infantry and used by the Royal Engineers to dig an advanced jumping-off trench for the British infantry, which would reduce the distance the British infantry would have to cross by over
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line. On 19 November 1915, the 179th Tunnelling Company commander, Captain Henry Hance, estimated that the Germans were 15 yd (14 m) away and ordered the mine chamber to be loaded with 6,000 lb (2.7 long tons; 2.7 t) of explosives, which was completed by midnight on
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To keep quiet, the tunnellers used bayonets with spliced handles and worked barefoot on a floor covered with sandbags. Flints were carefully prised out of the chalk and laid on the floor; if the bayonet was manipulated two-handed, an assistant caught the dislodged material.
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490 ft (150 m). Hance's superiors agreed that firing Y Sap mine early could help to neutralise enemy fire from the flanks around La Boisselle but the explosion would alert the Germans that a British attack was imminent and the suggestion was rejected.
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fire along no man's land. As the Germans in La Boisselle had fortified the cellars of ruined houses and the cratered ground made a direct infantry assault on the village impossible, two further mines, known as Y Sap, the British name for the German
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the machine-gunners caught the British infantry in crossfire. The 34th Division had the highest number of casualties of any of the divisions involved on 1 July. The crater of the Y Sap mine was filled in after World War I and is no longer visible.
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established an advanced post only 9.8 ft (3 m) from the German front line. By 24 December, the French had forced the Germans back from the cemetery and the western area of La Boisselle but were stopped a short distance forward at
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a German sapper inadvertently broke into French mine gallery, which he found to have been charged with explosives; a group of volunteers took 45 minutes to dismantle the charge and cut the firing cables. From April
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the Germans blew the charge, filling the remaining British tunnels with carbon monoxide. The right and left tunnels collapsed; it was later found that the German explosion had detonated the British mine.
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Captain Henry Hance, commander of the 179th Tunnelling Company, doubted the effect of the British destructive artillery bombardment and recommended blowing Y Sap mine two days early, to destroy the
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after the trench from which the gallery was dug, were planted to the north-east and the south-east of La Boisselle to assist the attack on either side of the German salient in the village.
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German troops of the 9th Company, RIR 110 could hear the British miners but not where they were; German miners could be heard by the British miners below Lochnagar and above Y Sap mine.
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at the west end of La Boisselle, where the opposing lines were 200 yd (180 m) apart, even during lulls along the rest of the Somme front. On the night of
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strongpoint, which overlooked Mash Valley, just north of La Boisselle. The mine consisted of a gallery dug from the British front line, near where it crossed the
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was placed in sandbags, passed hand-to-hand along a row of miners sitting on the floor and stored along the side of the tunnel, later to be used to
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the worst losses of the British divisions engaged on 1 July. The 19th Division was rushed forward in case of a German counter-attack on Albert.
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on 1 July 1916 and left a large crater. The explosion of the Y Sap mine failed to assist the British attack as the German eavesdroppers at the
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blew it away from the village. Prior and Wilson criticised the bombardment plan for lifting the heavy artillery off the German front line at
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listening station intercepted and passed on the British "good luck" message. The Germans removed machine-guns from the
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The Other Side of the Wire: The Battle of the Somme. With the German XIV Reserve Corps, September 1914 – June 1916
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French and German military operations began on the Somme in September 1914. A German advance westwards towards
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strongpoint (Y Sap to the British) was protected by a system of deep mines. Y Sap mine was dug underneath the
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Military Operations France and Belgium, 1916: Sir Douglas Haig's Command to the 1st July: Battle of the Somme
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of various sizes under the German positions along the front line and by preparing a series of shallow
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Royal Engineers Museum and Library Corps History Part 14, The Corps and the First World War (1914–18)
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The Other Side of the Wire: The Battle of the Somme. With the German XIV Reserve Corps, 1 July 1916
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The wrecked tunnels were gradually re-opened but about thirty bodies remained beneath La Boisselle.
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several times before it finally fell on 4 July, the divisions III Corps having suffered more than
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The War in the Air, Being the Story of the Part Played in the Great War by the Royal Air Force
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When the Barrage Lifts: A Topographical History and Commentary on the Battle of the Somme 1916
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Aerial view of Ovillers-La-Boisselle; the crater of the Y Sap mine is visible near the centre
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Military Operations in France and Belgium: 2 July to the End of the Battles of the Somme
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The Thirty-Fourth Division, 1915–1919: The Story of its Career from Ripon to the Rhine
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Scotland, Thomas; Heys, Steven (2014). "La Boisselle and Ovillers, 1 July 1916".
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was an underground explosive charge, secretly planted by the British during the
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Cecil Lewis, whose aircraft was hit by lumps of mud thrown up by the explosion.
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In January and February 1916, British raiding parties had discovered that the
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Somme 1916: Success and Failure on the First Day of the Battle of the Somme
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Map of the vicinity of Ovillers-La Boisselle (commune FR insee code 80615)
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from the British front line into no man's land, which would be opened at
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Sagittarius Rising: The Classic Account of Flying in the First World War
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intended to wreck German tunnels and create crater lips to block
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Understanding the Somme 1916: An Illuminating Battlefield Guide
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were to help the Allied preparations for the battle by placing
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on the British sector to be blown at the start of the battle.
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Surface model of the Y Sap, Glory Hole and Lochnagar craters
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Plan of the Y Sap mine. The Glory Hole site was known as
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List of the largest artificial non-nuclear explosions
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Battles of World War I involving the United Kingdom
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London: Peter Davis. 1245:was defended by posts near the mine shafts. 553: 242: 59:Battle of the Somme 1 July – 18 November 1916 8: 1699: 1523: 1403: 1381: 1375: 1365: 1359: 1346: 1340: 1322: 1240: 1230:the Engineer-in-Chief of the BEF, moved the 1202: 1161: 1155: 1147: 1114: 1108: 1102: 1083: 1064: 1906: 1882: 1061:Tunnelling Companies of the Royal Engineers 4752:Battles of the Western Front (World War I) 4418: 4127: 4032: 3972: 3081: 2889: 2683: 2591: 2577: 2569: 1711: 560: 546: 538: 249: 235: 227: 32: 1592: 1063:under a German machine-gun nest known as 216:Site of the Y Sap mine, near La Boisselle 4762:Battles of World War I involving Germany 3834:Revolutions and interventions in Hungary 4757:Battles of World War I involving France 4211:Occupied Enemy Territory Administration 1870: 1834: 1786: 1774: 1759: 1747: 1735: 1684: 1667: 1655: 1619: 1607: 1585: 1566: 1496:, almost 2 mi (3.2 km) away, 2463:Somme 1 July 1916: Tragedy and Triumph 2190:The German Army on the Somme 1914–1916 4164:Austro-Hungarian occupation of Serbia 3500:Third Battle of Ypres (Passchendaele) 1894: 1858: 1846: 1822: 1798: 1634: 1179:Map of chalk areas in northern France 7: 4568:Agreement of Saint-Jean-de-Maurienne 2012:Somme: The Heroism and Horror of War 1810: 4497:Ottomans against the Triple Entente 3291:Second Battle of the Masurian Lakes 2035:. Barnsley: Pen & Sword Books. 1723: 21:Mines on the first day of the Somme 3230:First Battle of the Masurian Lakes 2503:. Vol. II. Solihull: Helion. 14: 2559:Ovillers-La-Boisselle photo essay 2520:The Nineteenth Division 1914–1918 1448:102nd (Tyneside Scottish) Brigade 1374:road to a mine chamber under the 3593:Second Battle of the Piave River 3215:Russian invasion of East Prussia 196: 189: 153: 138: 53: 16:WWI underground explosive charge 4664:Arrest of a Suspect in Sarajevo 3864:Lithuanian Wars of Independence 2482:Writing the Dark Side of Travel 2434:– via Archive Foundation. 2403:– via Archive Foundation. 2301:– via Archive Foundation. 2275:– via Archive Foundation. 2136:– via Archive Foundation. 2026:– via Archive Foundation. 1051:and ready for 1 July 1916, the 4487:Austria-Hungary against Serbia 4346:Deportations from East Prussia 4143:1915 typhus epidemic in Serbia 2118:Prior, R.; Wilson, T. (2005). 1: 4727:Tunnel warfare in World War I 4398:Ukrainian Canadian internment 2054:. Barnsley: Frontline Books. 2033:Underground Warfare 1914–1918 1543:Armistice of 11 November 1918 1141:was stopped by the French at 4553:Sazonov–Paléologue Agreement 3852:Estonian War of Independence 3520:Southern Palestine offensive 2484:. New York: Berghahn Books. 4732:World War I sites in France 4507:USA against Austria-Hungary 3906:Turkish War of Independence 3858:Latvian War of Independence 3583:Treaty of Bucharest of 1918 3174:Anti-Serb riots in Sarajevo 1210:The British had formed the 1030:Western Front tactics, 1917 4793: 4590:Treaties of Brest-Litovsk 4138:1899–1923 cholera pandemic 3598:Second Battle of the Marne 3485:Second battle of the Aisne 3354:Second Battle of Champagne 3195:German invasion of Belgium 2444:The First Day on the Somme 2363:. Norwich: Gliddon Books. 2207:Whitehead, R. J. (2013) . 1421: 271:Battles of the Somme, 1916 18: 4696: 4371:Assyrian genocide (Sayfo) 3900:Irish War of Independence 3643:Armistice of Villa Giusti 3628:Battle of Vittorio Veneto 3240:First Battle of the Marne 2606: 2499:Whitehead, R. J. (2013). 2446:. London: Penguin Books. 2126:. Yale University Press. 1945:"Y Sap Mine, La Boiselle" 1097:Y Sap mine was sprung at 577: 268: 204:Y Sap mine (La Boisselle) 184: 167: 130: 63: 52: 40: 4523:Constantinople Agreement 3816:Armenian–Azerbaijani War 3679:Co-belligerent conflicts 3648:Second Romanian campaign 3618:Third Transjordan attack 3329:Gorlice–Tarnów offensive 3235:Battle of Grand Couronné 2554:La Boisselle Study Group 2239:La Boisselle Study Group 2160:Shakespear, J. (2001) . 1700:Scotland & Heys 2014 4586:Modus vivendi of Acroma 4538:Bulgaria–Germany treaty 3846:Greater Poland Uprising 3746:National Protection War 3623:Meuse–Argonne offensive 3573:German spring offensive 3568:Treaty of Brest-Litovsk 3344:Siege of Novogeorgievsk 3319:Second Battle of Artois 3200:Battle of the Frontiers 2461:Robertshaw, A. (2006). 2419:. New York: Macmillan. 2328:"WW1 Trip to the Somme" 2016:. London: John Murray. 1907:Prior & Wilson 2005 1883:Prior & Wilson 2005 1424:Capture of La Boisselle 918:German spring offensive 25:Battle of Albert (1916) 4611:Paris Peace Conference 4599:Ukraine–Central Powers 4393:Massacres of Albanians 4361:Late Ottoman genocides 4168:Bulgarian occupations 3876:Third Anglo-Afghan War 3840:Hungarian–Romanian War 3658:Naval Victory Bulletin 3653:Armistice with Germany 3603:Hundred Days Offensive 3530:Battle of La Malmaison 3480:Second battle of Arras 3447:Battle of Transylvania 3301:Second Battle of Ypres 3169:Sarajevo assassination 3058:South African Republic 2378:Jones, H. A. (2002) . 1524: 1509: 1475: 1444:first day on the Somme 1435: 1404: 1382: 1376: 1366: 1360: 1355: 1349:L'îlot de La Boisselle 1347: 1345:to the Germans and as 1341: 1323: 1288: 1255: 1241: 1203: 1184:Fighting continued in 1181: 1162: 1156: 1150:L'îlot de La Boisselle 1148: 1115: 1109: 1103: 1084: 1065: 1053:first day on the Somme 168:Commanders and leaders 103:50.020694°N 2.690028°E 4777:World War I memorials 4621:Treaty of St. Germain 4594:Russia–Central Powers 4548:Sykes–Picot Agreement 4376:Pontic Greek genocide 4351:Destruction of Kalisz 4327:Eastern Mediterranean 3888:Polish–Lithuanian War 3670:Armistice of Belgrade 3633:Armistice of Salonica 3563:Operation Faustschlag 3510:Third Battle of Oituz 3432:Baranovichi offensive 3400:Lake Naroch offensive 3374:Battle of Robat Karim 3349:Vistula–Bug offensive 3324:Battles of the Isonzo 3255:First Battle of Ypres 2188:Sheldon, J. (2006) . 2031:Jones, Simon (2010). 1492:, watched from above 1464: 1431: 1337: 1284: 1251: 1177: 4616:Treaty of Versailles 4332:Mount Lebanon famine 4247:in the United States 4215:Russian occupations 3929:Turkish–Armenian War 3870:Polish–Ukrainian War 3810:Ukrainian–Soviet War 3757:Central Asian Revolt 3540:Armistice of Focșani 3270:Battle of Sarikamish 3220:Battle of Tannenberg 2616:Military engagements 2518:Wyrall, E. (2009) . 2480:Skinner, J. (2012). 2359:Gliddon, G. (1987). 2253:Dunning, R. (2015). 2233:Banning, J. (2011). 2145:. Solihull: Helion. 2050:Kendall, P. (2015). 1738:, pp. 263, 265. 1442:on 1 July 1916, the 1372:D 929 Albert–Bapaume 1301:tunnelling companies 1291:At the start of the 1025:French Army mutinies 1020:1914 Christmas truce 790:Hohenzollern Redoubt 431:Butte de Warlencourt 212:class=notpageimage| 179:Erich von Falkenhayn 4722:Battle of the Somme 4683:They shall not pass 4606:Treaty of Bucharest 4563:Treaty of Bucharest 4502:USA against Germany 4479:Declarations of war 4183:German occupations 4096:British casualties 3955:Soviet–Georgian War 3882:Egyptian Revolution 3822:Armeno-Georgian War 3686:Somaliland campaign 3638:Armistice of Mudros 3515:Battle of Caporetto 3505:Battle of Mărășești 3475:Zimmermann telegram 3470:February Revolution 3415:Battle of the Somme 3339:Bug-Narew Offensive 3314:Battle of Gallipoli 3306:Sinking of the RMS 3098:Scramble for Africa 3092:Franco-Prussian War 2748:Sinai and Palestine 2285:lochnagarcrater.org 2099:Miles, W. (1992) . 1955:on 21 December 2016 1837:, pp. 375–376. 1801:, pp. 124–125. 1762:, pp. 262–265. 1670:, pp. 38, 371. 1595:, pp. 159–174. 1297:Battle of the Somme 1201:were sprung around 1014:Associated articles 731:Hartmannswillerkopf 591:Invasion of Belgium 474:Associated articles 108:50.020694; 2.690028 99: /  43:Battle of the Somme 4737:Explosions in 1916 4643:Treaty of Lausanne 4558:Paris Economy Pact 4492:UK against Germany 4422:Entry into the war 4388:Urkun (Kyrgyzstan) 4107:Ottoman casualties 3917:Franco-Turkish War 3797:Post-War conflicts 3781:Russian Revolution 3763:Invasion of Darfur 3728:Kelantan rebellion 3716:Kurdish rebellions 3692:Mexican Revolution 3525:October Revolution 3490:Kerensky offensive 3465:Capture of Baghdad 3442:Monastir offensive 3427:Brusilov offensive 3265:Battle of Kolubara 3104:Russo-Japanese War 2465:. London: Osprey. 2415:The Old Front Line 2338:on 19 October 2014 2326:Waugh, I. (2014). 2281:"La Boisselle Map" 1531:11,000 casualties, 1476: 1436: 1356: 1289: 1256: 1182: 4742:Conflicts in 1916 4709: 4708: 4692: 4691: 4676:The Golden Virgin 4670:Mutilated victory 4651: 4650: 4631:Treaty of Trianon 4626:Treaty of Neuilly 4533:Damascus Protocol 4406: 4405: 4366:Armenian genocide 4323:Allied blockades 4295:Belgian refugees 4078: 4077: 3988:Strategic bombing 3964: 3963: 3949:Franco-Syrian War 3923:Greco-Turkish War 3911:Anglo-Turkish War 3894:Polish–Soviet War 3828:German Revolution 3804:Russian Civil War 3787:Finnish Civil War 3613:Battle of Megiddo 3588:Battle of Goychay 3535:Battle of Cambrai 3495:Battle of Mărăști 3410:Battle of Jutland 3390:Erzurum offensive 3245:Siege of Przemyśl 3225:Siege of Tsingtao 3210:Battle of Galicia 3140:Second Balkan War 3128:Italo-Turkish War 3085:Pre-War conflicts 3071: 3070: 2961:Portuguese Empire 2877: 2876: 2839:German New Guinea 2821:Asian and Pacific 2529:978-1-84342-208-2 2510:978-1-907677-12-0 2491:978-0-85745-341-9 2472:978-1-84603-038-3 2453:978-0-14-139071-0 2393:978-1-84342-413-0 2370:978-0-947893-02-6 2306:Legg, J. (2013). 2255:"Military Mining" 2218:978-1-908916-89-1 2199:978-1-84415-269-8 2173:978-1-84342-050-7 2152:978-1-910294-90-1 2133:978-0-300-10694-7 2110:978-0-89839-169-5 2083:978-0-14-004367-9 2061:978-1-84832-905-8 2042:978-1-84415-962-8 2023:978-0-7195-6890-9 1997:978-0-89839-185-5 1909:, pp. 98–99. 1885:, pp. 92–93. 1702:, pp. 70–88. 1610:, pp. 62–65. 1038: 1037: 864:Nivelle offensive 638:Trouée de Charmes 535: 534: 522:Thiepval Memorial 377:Flers–Courcelette 225: 224: 126: 125: 4784: 4636:Treaty of Sèvres 4528:Treaty of London 4419: 4197:Northeast France 4128: 4100:Parliamentarians 4033: 3995:Chemical weapons 3973: 3734:Senussi campaign 3704:Muscat rebellion 3698:Maritz rebellion 3666: 3608:Vardar offensive 3437:Battle of Romani 3405:Battle of Asiago 3395:Battle of Verdun 3359:Kosovo offensive 3134:First Balkan War 3082: 2981:Russian Republic 2890: 2684: 2626:Economic history 2593: 2586: 2579: 2570: 2533: 2514: 2495: 2476: 2457: 2435: 2433: 2431: 2418: 2404: 2402: 2400: 2385: 2374: 2347: 2345: 2343: 2334:. 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Archived from 1949:mikemccormac.com 1941: 1935: 1934: 1932: 1930: 1916: 1910: 1904: 1898: 1892: 1886: 1880: 1874: 1868: 1862: 1856: 1850: 1844: 1838: 1832: 1826: 1820: 1814: 1808: 1802: 1796: 1790: 1784: 1778: 1772: 1763: 1757: 1751: 1745: 1739: 1733: 1727: 1721: 1715: 1709: 1703: 1697: 1688: 1682: 1671: 1665: 1659: 1653: 1638: 1632: 1623: 1617: 1611: 1605: 1596: 1590: 1574: 1571: 1532: 1527: 1520: 1507: 1441: 1407: 1385: 1379: 1373: 1369: 1363: 1352: 1344: 1327:strongpoint and 1326: 1293:Battle of Albert 1266: 1262: 1244: 1206: 1200: 1196: 1191: 1165: 1160:became known as 1159: 1153: 1118: 1112: 1106: 1100: 1089: 1068: 977:St Quentin Canal 572: 562: 555: 548: 539: 480:Hébuterne (1915) 443:Schwaben Redoubt 263: 261: 251: 244: 237: 228: 200: 199: 193: 163: 159: 157: 156: 148: 144: 142: 141: 114: 113: 111: 110: 109: 104: 100: 97: 96: 95: 92: 65: 64: 57: 33: 4792: 4791: 4787: 4786: 4785: 4783: 4782: 4781: 4712: 4711: 4710: 4705: 4688: 4647: 4579: 4572: 4543:Treaty of Darin 4511: 4473: 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E. 1974: 1972: 1969: 1967: 1966: 1936: 1924:webmatters.net 1911: 1899: 1887: 1875: 1863: 1851: 1839: 1827: 1815: 1803: 1791: 1789:, p. 266. 1779: 1777:, p. 375. 1764: 1752: 1750:, pp. 51. 1740: 1728: 1716: 1704: 1689: 1672: 1660: 1639: 1637:, p. 114. 1624: 1612: 1597: 1593:Whitehead 2013 1584: 1582: 1579: 1576: 1575: 1565: 1564: 1562: 1559: 1558: 1557: 1550: 1547: 1538: 1535: 1513: 1510: 1503: 1490:Morane Parasol 1488:RFC, flying a 1479:2nd Lieutenant 1473:on 1 July 1916 1469:, as flown by 1467:Morane Parasol 1465: 1432: 1419: 1416: 1414: 1411: 1353:to the French. 1338: 1285: 1278: 1275: 1273: 1270: 1252: 1195:1915 – January 1178: 1171: 1168: 1134: 1131: 1129: 1126: 1036: 1035: 1033: 1032: 1027: 1022: 1010: 1009: 1007:Lys and Escaut 1004: 999: 994: 989: 984: 979: 974: 969: 964: 959: 954: 949: 948: 947: 942: 937: 932: 927: 909: 908: 903: 898: 893: 888: 887: 886: 881: 876: 871: 861: 854: 843: 842: 837: 832: 827: 822: 817: 812: 807: 802: 797: 792: 787: 776: 775: 770: 765: 760: 755: 754: 753: 743: 738: 736:Neuve Chapelle 733: 728: 717: 716: 711: 709:Winter actions 706: 705: 704: 699: 689: 684: 679: 674: 672:Grand Couronné 669: 664: 663: 662: 657: 652: 642: 641: 640: 635: 630: 625: 620: 610: 609: 608: 603: 598: 588: 578: 575: 574: 567: 565: 564: 557: 550: 542: 533: 532: 530: 529: 524: 519: 514: 513: 512: 510:Hawthorn Ridge 507: 502: 492: 487: 482: 470: 469: 468: 467: 465:Beaumont-Hamel 457: 456: 455: 450: 445: 435: 434: 433: 428: 423: 413: 411:Thiepval Ridge 408: 407: 406: 401: 396: 386: 385: 384: 374: 369: 364: 363: 362: 352: 347: 346: 345: 340: 335: 330: 325: 318:Bazentin Ridge 315: 314: 313: 308: 303: 298: 293: 288: 283: 269: 266: 265: 256: 254: 253: 246: 239: 231: 223: 222: 215: 210: 209: 203: 202: 195: 194: 188: 187: 186: 185: 182: 181: 176: 170: 169: 165: 164: 149: 133: 132: 128: 127: 124: 123: 122:German victory 120: 116: 115: 79: 77: 73: 72: 69: 61: 60: 50: 49: 38: 37: 31: 30: 15: 13: 10: 9: 6: 4: 3: 2: 4789: 4778: 4775: 4773: 4770: 4768: 4765: 4763: 4760: 4758: 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3853: 3850: 3847: 3844: 3841: 3838: 3835: 3832: 3829: 3826: 3823: 3820: 3817: 3814: 3811: 3808: 3805: 3802: 3801: 3799: 3795: 3788: 3785: 3782: 3779: 3776: 3775:Kaocen revolt 3773: 3770: 3769:Easter Rising 3767: 3764: 3761: 3758: 3755: 3752: 3749: 3747: 3744: 3741: 3738: 3735: 3732: 3729: 3726: 3723: 3720: 3717: 3714: 3711: 3708: 3705: 3702: 3699: 3696: 3693: 3690: 3687: 3684: 3683: 3681: 3677: 3671: 3668: 3664: 3659: 3656: 3654: 3651: 3649: 3646: 3644: 3641: 3639: 3636: 3634: 3631: 3629: 3626: 3624: 3621: 3619: 3616: 3614: 3611: 3609: 3606: 3604: 3601: 3599: 3596: 3594: 3591: 3589: 3586: 3584: 3581: 3579: 3576: 3574: 3571: 3569: 3566: 3564: 3561: 3560: 3558: 3556: 3552: 3546: 3543: 3541: 3538: 3536: 3533: 3531: 3528: 3526: 3523: 3521: 3518: 3516: 3513: 3511: 3508: 3506: 3503: 3501: 3498: 3496: 3493: 3491: 3488: 3486: 3483: 3481: 3478: 3476: 3473: 3471: 3468: 3466: 3463: 3462: 3460: 3458: 3454: 3448: 3445: 3443: 3440: 3438: 3435: 3433: 3430: 3428: 3425: 3421: 3418: 3417: 3416: 3413: 3411: 3408: 3406: 3403: 3401: 3398: 3396: 3393: 3391: 3388: 3387: 3385: 3381: 3375: 3372: 3370: 3367: 3365: 3362: 3360: 3357: 3355: 3352: 3350: 3347: 3345: 3342: 3340: 3337: 3335: 3334:Great Retreat 3332: 3330: 3327: 3325: 3322: 3320: 3317: 3315: 3312: 3310: 3309: 3304: 3302: 3299: 3297: 3294: 3292: 3289: 3288: 3286: 3282: 3276: 3273: 3271: 3268: 3266: 3263: 3261: 3258: 3256: 3253: 3251: 3248: 3246: 3243: 3241: 3238: 3236: 3233: 3231: 3228: 3226: 3223: 3221: 3218: 3216: 3213: 3211: 3208: 3206: 3205:Battle of Cer 3203: 3201: 3198: 3196: 3193: 3192: 3190: 3186: 3180: 3177: 3175: 3172: 3170: 3167: 3163: 3160: 3159: 3158: 3155: 3154: 3152: 3148: 3141: 3138: 3135: 3132: 3129: 3126: 3123: 3122:Agadir Crisis 3120: 3117: 3114: 3111: 3108: 3105: 3102: 3099: 3096: 3093: 3090: 3089: 3087: 3083: 3080: 3078: 3074: 3064: 3061: 3059: 3056: 3054: 3051: 3049: 3046: 3044: 3041: 3039: 3036: 3034: 3031: 3029: 3026: 3025: 3023: 3021: 3017: 3011: 3010:United States 3008: 3004: 3001: 3000: 2999: 2996: 2994: 2991: 2989: 2986: 2982: 2979: 2977: 2974: 2973: 2972: 2969: 2967: 2964: 2962: 2959: 2957: 2954: 2950: 2947: 2946: 2945: 2942: 2940: 2937: 2935: 2932: 2928: 2927:French Empire 2925: 2924: 2923: 2920: 2918: 2915: 2913: 2910: 2908: 2905: 2903: 2900: 2899: 2897: 2895: 2891: 2888: 2880: 2870: 2869:Mediterranean 2867: 2863: 2860: 2859: 2858: 2855: 2854: 2852: 2850: 2849:Naval warfare 2846: 2840: 2837: 2835: 2832: 2830: 2827: 2826: 2824: 2822: 2818: 2812: 2809: 2807: 2804: 2802: 2799: 2797: 2794: 2792: 2789: 2788: 2786: 2784: 2780: 2774: 2771: 2769: 2766: 2764: 2761: 2759: 2756: 2754: 2751: 2749: 2746: 2744: 2741: 2740: 2738: 2736: 2732: 2726: 2725:Italian Front 2723: 2719: 2716: 2715: 2714: 2713:Eastern Front 2711: 2709: 2708:Western Front 2706: 2702: 2699: 2698: 2697: 2694: 2693: 2691: 2689: 2685: 2682: 2678: 2672: 2669: 2667: 2666:Puppet states 2664: 2662: 2659: 2657: 2654: 2652: 2649: 2647: 2644: 2642: 2639: 2637: 2634: 2632: 2629: 2627: 2624: 2622: 2619: 2617: 2614: 2612: 2609: 2608: 2605: 2601: 2594: 2589: 2587: 2582: 2580: 2575: 2574: 2571: 2565: 2562: 2560: 2557: 2555: 2552: 2550: 2547: 2545: 2542: 2541: 2537: 2531: 2525: 2521: 2516: 2512: 2506: 2502: 2497: 2493: 2487: 2483: 2478: 2474: 2468: 2464: 2459: 2455: 2449: 2445: 2441: 2437: 2426: 2422: 2417: 2416: 2410: 2409:Masefield, J. 2406: 2395: 2389: 2384: 2383: 2376: 2372: 2366: 2362: 2357: 2356: 2352: 2337: 2333: 2329: 2324: 2313: 2309: 2304: 2291: 2286: 2282: 2278: 2265: 2260: 2256: 2251: 2240: 2236: 2231: 2230: 2229: 2228: 2220: 2214: 2210: 2205: 2201: 2195: 2191: 2186: 2175: 2169: 2165: 2164: 2158: 2154: 2148: 2144: 2139: 2135: 2129: 2124: 2123: 2116: 2112: 2106: 2102: 2097: 2093: 2089: 2085: 2079: 2075: 2071: 2067: 2063: 2057: 2053: 2048: 2044: 2038: 2034: 2029: 2025: 2019: 2014: 2013: 2007: 2003: 1999: 1993: 1989: 1985: 1981: 1980: 1979: 1978: 1970: 1954: 1950: 1946: 1940: 1937: 1925: 1921: 1915: 1912: 1908: 1903: 1900: 1897:, p. 20. 1896: 1891: 1888: 1884: 1879: 1876: 1873:, p. 54. 1872: 1867: 1864: 1861:, p. 90. 1860: 1855: 1852: 1849:, p. 13. 1848: 1843: 1840: 1836: 1831: 1828: 1824: 1819: 1816: 1812: 1807: 1804: 1800: 1795: 1792: 1788: 1783: 1780: 1776: 1771: 1769: 1765: 1761: 1756: 1753: 1749: 1744: 1741: 1737: 1732: 1729: 1725: 1720: 1717: 1714:, p. 37. 1713: 1708: 1705: 1701: 1696: 1694: 1690: 1686: 1681: 1679: 1677: 1673: 1669: 1664: 1661: 1657: 1652: 1650: 1648: 1646: 1644: 1640: 1636: 1631: 1629: 1625: 1622:, p. 75. 1621: 1616: 1613: 1609: 1604: 1602: 1598: 1594: 1589: 1586: 1580: 1570: 1567: 1560: 1556: 1553: 1552: 1548: 1546: 1544: 1536: 1534: 1526: 1511: 1502: 1497: 1495: 1491: 1487: 1483: 1480: 1472: 1468: 1463: 1459: 1457: 1456:37th Division 1453: 1452:34th Division 1449: 1445: 1430: 1425: 1417: 1412: 1410: 1406: 1400: 1397: 1393: 1387: 1384: 1378: 1368: 1362: 1351: 1350: 1343: 1336: 1332: 1330: 1325: 1319: 1314: 1310: 1306: 1302: 1298: 1294: 1283: 1276: 1271: 1269: 1250: 1246: 1243: 1237: 1233: 1229: 1225: 1221: 1217: 1213: 1208: 1205: 1187: 1186:no man's land 1176: 1169: 1167: 1164: 1158: 1152: 1151: 1144: 1140: 1132: 1127: 1125: 1122: 1117: 1111: 1105: 1095: 1093: 1088: 1087: 1082: 1078: 1074: 1073: 1067: 1062: 1058: 1054: 1050: 1046: 1031: 1028: 1026: 1023: 1021: 1018: 1017: 1016: 1015: 1008: 1005: 1003: 1000: 998: 995: 993: 990: 988: 985: 983: 982:Meuse-Argonne 980: 978: 975: 973: 970: 968: 965: 963: 960: 958: 955: 953: 950: 946: 943: 941: 938: 936: 933: 931: 928: 926: 925: 921: 920: 919: 916: 915: 914: 913: 907: 904: 902: 899: 897: 896:Passchendaele 894: 892: 889: 885: 882: 880: 877: 875: 872: 870: 867: 866: 865: 862: 860: 859: 855: 853: 850: 849: 848: 847: 841: 838: 836: 833: 831: 828: 826: 823: 821: 818: 816: 813: 811: 808: 806: 803: 801: 798: 796: 793: 791: 788: 786: 783: 782: 781: 780: 774: 771: 769: 766: 764: 761: 759: 758:2nd Champagne 756: 752: 749: 748: 747: 744: 742: 739: 737: 734: 732: 729: 727: 726:1st Champagne 724: 723: 722: 721: 715: 712: 710: 707: 703: 700: 698: 695: 694: 693: 690: 688: 685: 683: 680: 678: 675: 673: 670: 668: 665: 661: 658: 656: 653: 651: 648: 647: 646: 645:Great Retreat 643: 639: 636: 634: 631: 629: 626: 624: 621: 619: 616: 615: 614: 611: 607: 604: 602: 599: 597: 594: 593: 592: 589: 587: 584: 583: 581: 576: 571: 570:Western Front 563: 558: 556: 551: 549: 544: 543: 540: 528: 525: 523: 520: 518: 515: 511: 508: 506: 503: 501: 498: 497: 496: 495:Mines, 1 July 493: 491: 488: 486: 483: 481: 478: 477: 476: 475: 466: 463: 462: 461: 458: 454: 453:Regina Trench 451: 449: 448:Stuff Redoubt 446: 444: 441: 440: 439: 438:Ancre Heights 436: 432: 429: 427: 424: 422: 419: 418: 417: 414: 412: 409: 405: 402: 400: 397: 395: 392: 391: 390: 387: 383: 380: 379: 378: 375: 373: 370: 368: 365: 361: 358: 357: 356: 353: 351: 350:Delville Wood 348: 344: 341: 339: 336: 334: 331: 329: 326: 324: 321: 320: 319: 316: 312: 309: 307: 304: 302: 299: 297: 294: 292: 289: 287: 284: 282: 279: 278: 277: 274: 273: 272: 267: 262: 252: 247: 245: 240: 238: 233: 232: 229: 213: 192: 183: 180: 177: 175: 172: 171: 166: 162: 150: 147: 135: 134: 129: 121: 118: 117: 112: 82: 78: 75: 74: 70: 67: 66: 62: 56: 51: 48: 44: 39: 34: 29: 26: 22: 4681: 4674: 4662: 4269: / 4201: 4036:Conscription 4000:Cryptography 3937:Iraqi Revolt 3364:Siege of Kut 3307: 2885:participants 2834:German Samoa 2768:South Arabia 2519: 2500: 2481: 2462: 2443: 2428:. Retrieved 2414: 2397:. Retrieved 2381: 2360: 2340:. Retrieved 2336:the original 2331: 2315:. Retrieved 2311: 2295:. Retrieved 2290:the original 2284: 2269:. Retrieved 2264:the original 2258: 2242:. Retrieved 2238: 2235:"Tunnellers" 2226: 2225: 2208: 2189: 2177:. Retrieved 2162: 2142: 2121: 2100: 2073: 2070:Lewis, C. A. 2051: 2032: 2011: 1987: 1976: 1975: 1971:Bibliography 1957:. Retrieved 1953:the original 1948: 1939: 1927:. Retrieved 1923: 1914: 1902: 1890: 1878: 1871:Gilbert 2007 1866: 1854: 1842: 1835:Edmonds 1993 1830: 1818: 1806: 1794: 1787:Kendall 2015 1782: 1775:Edmonds 1993 1760:Kendall 2015 1755: 1748:Gilbert 2007 1743: 1736:Kendall 2015 1731: 1719: 1707: 1685:Banning 2011 1668:Edmonds 1993 1663: 1656:Dunning 2015 1620:Sheldon 2006 1615: 1608:Sheldon 2006 1588: 1569: 1540: 1515: 1499: 1477: 1437: 1401: 1388: 1357: 1309:Russian saps 1290: 1257: 1228:George Fowke 1209: 1183: 1143:La Boisselle 1136: 1096: 1077:La Boisselle 1071: 1044: 1042: 1013: 1012: 972:Saint-Mihiel 940:Belleau Wood 923: 911: 910: 901:La Malmaison 857: 845: 844: 810:Kink Salient 778: 777: 773:Gas: Wieltje 719: 718: 579: 504: 473: 472: 360:Mouquet Farm 306:La Boisselle 301:Contalmaison 270: 174:Douglas Haig 131:Belligerents 94:02°41′24.1″E 91:50°01′14.5″N 41:Part of The 28: 4299:Netherlands 4276:Switzerland 4157:Occupations 4148:Spanish flu 3925:(1919–1922) 3919:(1918–1921) 3913:(1918–1923) 3902:(1919–1921) 3896:(1919–1921) 3890:(1919–1920) 3866:(1918–1920) 3860:(1918–1920) 3854:(1918–1920) 3836:(1918–1920) 3818:(1918–1920) 3812:(1917–1921) 3806:(1917–1921) 3753:(1916-1918) 3751:Arab Revolt 3742:(1915–1917) 3736:(1915–1917) 3724:(1914-1917) 3718:(1914–1917) 3712:(1914–1921) 3706:(1913–1920) 3694:(1910–1920) 3688:(1900–1920) 3661: [ 3179:July Crisis 3100:(1880–1914) 2763:Mesopotamia 2641:Home fronts 2600:World War I 2297:18 December 2006:Gilbert, M. 1482:Cecil Lewis 1471:Cecil Lewis 1086:département 992:2nd Cambrai 830:Boar's Head 820:Mont Sorrel 527:Ancre, 1917 490:Boar's Head 416:Le Transloy 404:Gueudecourt 382:Martinpuich 328:Trônes Wood 106: / 71:1 July 1916 4716:Categories 4516:Agreements 4316:War crimes 4192:Luxembourg 4085:Casualties 2956:Montenegro 2791:South West 2671:Technology 2661:Propaganda 2651:Opposition 2430:19 October 2399:18 October 2342:19 October 2179:18 October 1959:3 December 1929:3 December 1895:Miles 1992 1859:Lewis 1977 1847:Miles 1992 1823:Waugh 2014 1799:Jones 2010 1635:Jones 2010 1541:After the 1519:7:00 a.m., 1486:3 Squadron 1422:See also: 1190:8/9 March, 1128:Background 1045:Y Sap mine 805:Wulverghem 768:3rd Artois 746:2nd Artois 714:1st Artois 367:Guillemont 311:Gommecourt 36:Y Sap mine 4413:Diplomacy 4120:Olympians 4043:Australia 4010:Logistics 3943:Vlora War 3872:(1918–19) 3848:(1918–19) 3842:(1918–19) 3830:(1918–19) 3777:(1916–17) 3759:(1916–17) 3710:Zaian War 3700:(1914–15) 3420:first day 3308:Lusitania 3136:(1912–13) 3130:(1911–12) 3118:(1908–09) 3112:(1905–06) 3094:(1870–71) 2883:Principal 2743:Gallipoli 2646:Memorials 2631:Geography 2621:Aftermath 2425:869145562 2122:The Somme 2092:473683742 2072:(1977) . 1986:(1993) . 1811:Legg 2013 1581:Footnotes 1440:7:28 a.m. 1405:Blinddarm 1383:Blinddarm 1377:Blinddarm 1367:Blinddarm 1361:Blinddarm 1342:Granathof 1329:Lochnagar 1324:Blinddarm 1313:Zero Hour 1265:1:30 a.m. 1163:Granathof 1121:Zero Hour 1116:Blinddarm 1099:7:28 a.m. 1066:Blinddarm 987:5th Ypres 967:2nd Somme 945:2nd Marne 935:3rd Aisne 884:The Hills 879:2nd Aisne 840:Fromelles 835:1st Somme 785:The Bluff 751:Hébuterne 741:2nd Ypres 702:1st Ypres 682:1st Aisne 677:1st Marne 650:Le Cateau 628:Charleroi 613:Frontiers 500:Lochnagar 343:High Wood 338:Fromelles 323:Longueval 286:Montauban 281:First day 4701:Category 4288:Refugees 4254:Italians 4243:Germans 4203:Ober Ost 3983:Aviation 3077:Timeline 3048:Bulgaria 2829:Tsingtao 2806:Togoland 2753:Caucasus 2688:European 2680:Theatres 2442:(1971). 2411:(1917). 2227:Websites 2008:(2007). 1724:Map 2016 1549:See also 1537:Post-war 1512:Analysis 1504:—  1494:Thiepval 1318:enfilade 1305:19 mines 1199:61 mines 1092:19 mines 1072:appendix 997:Courtrai 952:Soissons 891:Messines 858:Alberich 667:Maubeuge 623:Ardennes 618:Lorraine 586:Moresnet 421:Eaucourt 399:Lesbœufs 355:Pozières 333:Ovillers 296:Fricourt 83:, France 76:Location 4439:Germany 4339:Germany 4267:Germany 4187:Belgium 4172:Albania 4131:Disease 4111:Sports 4063:Ireland 3976:Warfare 3969:Aspects 3157:Origins 3150:Prelude 3053:Senussi 3033:Germany 3028:Leaders 2966:Romania 2907:Belgium 2902:Leaders 2801:Kamerun 2783:African 2718:Romania 2696:Balkans 2611:Outline 2271:26 June 2244:26 June 1272:Prelude 1119:and at 1079:in the 962:Ailette 930:The Lys 924:Michael 906:Cambrai 800:Hulluch 795:St Eloi 687:Antwerp 426:Le Sars 394:Combles 161:Germany 146:Britain 81:Picardy 4459:Russia 4434:France 4262:Canada 4177:Serbia 4048:Canada 4005:Horses 3957:(1921) 3951:(1920) 3945:(1920) 3939:(1920) 3931:(1920) 3884:(1919) 3878:(1919) 3824:(1918) 3789:(1918) 3783:(1917) 3771:(1916) 3765:(1916) 3730:(1915) 3142:(1913) 3124:(1911) 3106:(1905) 3063:Darfur 2988:Serbia 2971:Russia 2934:Greece 2922:France 2912:Brazil 2758:Persia 2701:Serbia 2526:  2507:  2488:  2469:  2450:  2423:  2390:  2367:  2317:18 May 2215:  2196:  2170:  2149:  2130:  2107:  2090:  2080:  2058:  2039:  2020:  1994:  1525:Moritz 1418:1 July 1413:Battle 1242:L'îlot 1204:L'îlot 1197:1916, 1157:L'îlot 1139:Albert 1104:Moritz 1055:. The 1002:Sambre 957:Amiens 825:Verdun 655:Étreux 601:Dinant 389:Morval 372:Ginchy 291:Mametz 276:Albert 158:  143:  119:Result 4656:Other 4449:Japan 4444:Italy 4271:camps 4115:Rugby 3665:] 2944:Japan 2939:Italy 2917:China 2811:North 1977:Books 1561:Notes 1392:Spoil 1236:183rd 1232:174th 1224:252nd 1220:185th 1216:179th 1212:178th 1081:Somme 869:Arras 852:Ancre 606:Namur 596:Liège 505:Y Sap 460:Ancre 4236:POWs 3555:1918 3457:1917 3383:1916 3284:1915 3188:1914 2993:Siam 2796:East 2524:ISBN 2505:ISBN 2486:ISBN 2467:ISBN 2448:ISBN 2432:2014 2421:OCLC 2401:2014 2388:ISBN 2365:ISBN 2344:2014 2319:2013 2299:2016 2273:2015 2246:2015 2213:ISBN 2194:ISBN 2181:2014 2168:ISBN 2147:ISBN 2128:ISBN 2105:ISBN 2088:OCLC 2078:ISBN 2056:ISBN 2037:ISBN 2018:ISBN 1992:ISBN 1961:2016 1931:2016 1396:tamp 1277:1916 1234:and 1222:and 1214:and 1170:1915 1133:1914 1110:Nord 1057:mine 1043:The 912:1918 874:Vimy 846:1917 779:1916 763:Loos 720:1915 697:Yser 633:Mons 580:1914 68:Date 23:and 1484:of 1386:). 1263:At 1107:28 4718:: 3663:It 2330:. 2310:. 2283:. 2257:. 2237:. 2086:. 1947:. 1922:. 1767:^ 1692:^ 1675:^ 1642:^ 1627:^ 1600:^ 1458:. 45:, 4087:/ 2592:e 2585:t 2578:v 2532:. 2513:. 2494:. 2475:. 2456:. 2373:. 2346:. 2321:. 2248:. 2221:. 2202:. 2183:. 2155:. 2113:. 2094:. 2064:. 2045:. 2000:. 1963:. 1933:. 1825:. 1813:. 1726:. 1687:. 1658:. 1069:( 561:e 554:t 547:v 250:e 243:t 236:v

Index

Mines on the first day of the Somme
Battle of Albert (1916)
Battle of the Somme
First World War

Picardy
50°01′14.5″N 02°41′24.1″E / 50.020694°N 2.690028°E / 50.020694; 2.690028
Britain
Germany
Douglas Haig
Erich von Falkenhayn
Y Sap mine (La Boisselle) is located in France
class=notpageimage|
v
t
e
Somme Offensive
Albert
First day
Montauban
Mametz
Fricourt
Contalmaison
La Boisselle
Gommecourt
Bazentin Ridge
Longueval
Trônes Wood
Ovillers
Fromelles

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