THE POISONOUS CLOUD.
While the Germans were fiercely shelling Hill 60 the tide of war rolled along the Ypres Salient, which has so often figured in these pages. The Gaspipe Officer already quoted says: "The old Ypres salient was such a silly thing. Imagine for a moment one of those old Greek theatres, semicircular. All the way round the Germans were on the top row of seats, and we were only halfway up. They could see everything that we were doing, while we, hemmed in, had to trust to aeroplanes. And down on the floor of the theatre stood Ypres, through which, or by which, nearly every road to the salient passed."
If you look at the diagram on page [189], you will see how we were holding the salient on the morning of 22nd April. Our lines ran in a semicircle from Steenstraate, on the Yser canal, about four and a half miles to the north of Ypres, right round to the Ypres-Comines canal, about two miles south of the city. Nowhere was the salient more than four and a half miles across; every part of it, including Ypres itself, was, therefore, within range of the enemy's big guns. As the Gaspipe Officer tells us, the Germans held the higher ground, and were thus in a very favourable position for sweeping all parts of the salient with their fire. All the roads to the outer rim of the salient spread out from Ypres like the spokes of a wheel. Our supply and ammunition columns were, therefore, under fire the moment they entered or passed by the city.
The British forces had greatly increased since those days of terrible trial in the preceding October and November, when, with never more than 150,000 men, we had beaten back the furious onrush of at least half a million Germans, and had blocked for ever the coveted road to Calais. We had now some 500,000 men at the front, and we felt, after our great assault at Neuve Chapelle, that we had the upper hand of the enemy, and that henceforth the attack was with us and the defence lay with him. Before, however, he sank into this secondary position he meant to make another desperate effort to reach the Channel ports. This long and fierce struggle, which I am now about to describe, is known as the Second Battle of Ypres.
