In the light of subsequent events, it turned out that no form of training could have been more appropriate, as the salient feature of the third battle of Ypres proved to be the concrete pill-box, impervious to the field-artillery barrage, which in many cases could only be subdued by the individual action of the platoons opposed to it.
The successful manner in which, as will be seen, the Division overcame the pill-boxes can be directly ascribed to this form of training.
On 12th June the 51st was transferred to the XVIIIth Corps, and on the 15th General Harper was informed by the Corps commander, General Sir F. I. Maxse, that the Division would shortly occupy a portion of the Ypres salient, from which it would take part in a great attack.
The situation in the salient as summarised in the commander-in-chief’s despatch was as follows: “The positions held by us in the Ypres salient since May 1915 were far from satisfactory. They were completely overlooked by the enemy; their defence involved a considerable strain on the troops occupying them, and they were certain to be costly to maintain against a serious attack, in which the enemy would enjoy all the advantages in observation and in the placing of his artillery. Our positions would be much improved by the capture of the Messines-Wytschaete Ridge and of the high ground which extends north-eastwards for some seven miles, and then turns north through Broodseinde and Passchendaele.”
In operations beginning on 7th June the Messines-Wytschaete Ridge had been captured, so that at this date, 15th June, the capture of the Passchendaele Ridge remained as the ultimate objective to be attained.
The front allotted to the Division lay due north of Ypres. It was not a pleasant sector, as, in spite of the capture of Messines, the salient still remained sufficiently pronounced for shells to arrive in the front-line trenches from the right rear.
The trenches, such as they were, consisted of breastworks. The front line in some places did not afford cover from view, while in others the thistles and wild mustard on the parapet had been allowed to grow so high that men on the fire-steps could not see over them.
The support line consisted of a few earthworks, resembling grouse butts, and fortified farms, while the reserve line was composed almost entirely of the latter.
There were about half a dozen shell-proof dug-outs in the Divisional sector, one at Turco Farm and one at the Willows, both having to be abandoned owing to the shell-fire they attracted. The C.R.E. reported on these dug-outs: “They are shelled extremely heavily always on the slightest provocation and often with none.” Two other dug-outs, one at Lancashire Farm and one at Foch Farm, were good, and were retained as battalion headquarters.
About 2000 yards behind the front line ran the Canal de l’Yser. In the banks of this canal lived a large population—reserve companies, battalion headquarters, pioneers, sappers, R.A.M.C., and brigade headquarters. There was hardly a square yard of the canal bank unoccupied. This vast population lived in every type of non-shell-proof residence, from splinter-proof elephant shelters to the worse kind of “Bairnsfather” shack, which did not even keep out the rain.