Battle of Pilckem Ridge
Battle of Pilckem Ridge
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Battle of Pilckem Ridge

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Battle of Pilckem Ridge

The Battle of Pilckem Ridge (31 July – 2 August 1917) was the opening attack of the Third Battle of Ypres in the First World War. The British Fifth Army, supported by the Second Army on the southern flank and the French 1reArmée (First Army) on the northern flank, attacked the German 4th Army, which defended the Western Front from Lille northwards to the Ypres Salient in Belgium and on to the North Sea coast. On 31 July, the Anglo-French armies captured Pilckem (Flemish: Pilkem) Ridge and areas on either side, the French attack being a great success. After several weeks of changeable weather, heavy rain fell during the afternoon of 31 July.

In the XIX Corps area in the centre and on the right of XVIII Corps, three reserve brigades advanced from the black line to the main objective (green line) and pressed on towards the red line, the furthest that exploitation on local initiative had been allowed for in the plan. It began to rain, cutting off the advanced British troops from view, just as German regiments from specialist Eingreif (counter-attack) divisions advanced over Passchendaele Ridge. To avoid being rolled up, the reserve brigades retreated, suffering many casualties, through the green line to the black line, which the British artillery-observers could still see; the German infantry were prevented from advancing further by massed artillery and small-arms fire.

A substantial amount of ground had been captured by the British and French, except on the Gheluvelt Plateau on the right flank, where only the blue line (first objective) and part of the black line (second objective) were captured. A large number of casualties were inflicted on the German defenders during the attack and 5,626 prisoners were taken; the German Eingreif divisions recaptured some ground from the Ypres–Roulers railway northwards to St Julien, forcing the British back to the black line. For the next few days, both sides made local attacks to improve their positions, much hampered by the deluges. The rains had a serious effect on operations in August, causing more problems for the British and French, who were advancing into the area devastated by artillery fire and partly flooded by the unseasonable rain.

A local British attack on the Gheluvelt Plateau on 2 August was postponed several times because of the weather until 10 August and the second big general attack, due on 4 August, did not begin until 16 August. The green line objectives on the Plateau were not captured until the Battle of the Menin Road Ridge on 20 September, after the principal role in the offensive was transferred to the Second Army and three weeks' sunshine and fresh breezes dried much of the ground. The Third Battle of Ypres became controversial while it was being fought, with disputes about the predictability of the August deluges and for its mixed results, which in much of the writing in English is blamed on apparent misunderstandings between Gough and Haig and on faulty planning, rather than on the resilience of the 4th Army.

Operations in Flanders, Belgium had been desired by the British Cabinet, Admiralty and War Office since 1914. In January 1916, Haig ordered General Henry Rawlinson to plan an attack in the Ypres Salient. The need to support the French army during the Battle of Verdun 21 February – 18 December 1916 and the demands of the Somme battles 1 July – 18 November 1916, absorbed the offensive capacity of the British for the rest of the year. Marshal Joseph Joffre was replaced as the French Commander-in-Chief by General Robert Nivelle in December, who planned a breakthrough offensive by the French armies on the Western Front during the spring of 1917, to return to a war of manoeuvre and a decisive victory. The Nivelle Offensive began on 9 April with the British Battle of Arras, followed on 16 April by the French Second Battle of the Aisne. The British attack was a big success but the French plan to defeat decisively the Westheer (German army in the west) was a strategic failure. Morale in the French armies collapsed, mutinies occurred and Nivelle was replaced by General Philippe Petain.

While the French recuperated, offensive action on the Western Front could only come from the BEF and in June 1917, the principle of a Flanders campaign was reluctantly approved by the British War Cabinet. On the French sector, Petain intended to maintain an active defence and planned three limited Batailles de Redressement (battles of recovery) lavishly to be supported with artillery, aircraft and manpower, sufficient to guarantee success and restore morale. In early June, at about the same time as the British attack on Messines Ridge, the Sixth Army would attack on the Aisne front. In Flanders, the First Army (General François Anthoine) was to participate in the British Flanders offensive and in mid-July, the Second Army would attack at Verdun, as the main Flanders offensive began. In early June, the crisis in the French armies led to the postponement of the Sixth Army attack on the Chemin des Dames but during June and July, the concentration of the First Army north of Ypres continued.

In late 1916, the Second Army commander, General Herbert Plumer was ordered to plan an attack out of the Ypres Salient but Haig was dissatisfied with the limited scope of the plan to capture Messines Ridge and Pilkem Ridge further north. In early 1917, Haig calculated that the Nivelle Offensive would force the Germans out of Belgium or that the 4th Army in Flanders would give up divisions to reinforce the armies further south. Plumer revised the plan to capture Messines and Pilckem ridges and advance onto the Gheluvelt Plateau; a later attack would capture the Plateau, Passchendaele and beyond. The plan required 35 divisions and 5,000 guns, far more artillery than the BEF possessed.

At General Headquarters (GHQ) Colonel George Macmullen proposed to capture the Gheluvelt Plateau with a massed tank attack but a reconnaissance in April, found that narrow defiles between three woods on the Plateau and broken ground obstructed the approaches. Tanks would have to detour north of Bellewaarde lake to Westhoek, then wheel right at the Albrechtstellung. Plumer produced another plan to take Messines Ridge and the west end of the Gheluvelt Plateau, followed by the capture of Pilckem Ridge. The Fourth Army commander, General Henry Rawlinson, proposed to take Messines Ridge first, then the Gheluvelt Plateau and Pilckem Ridge within 47 to 72 hours.

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