I saw that bombardment on the morning of Wednesday, October 13th, and the beginning of the attack from a slag heap close to some of our heavy guns. It was a fine, clear day, and some of the French miners living round the pit-heads on our side of the battle line climbed up iron ladders and coal heaps, roused to a new interest in the spectacle of war which had become a monotonous and familiar thing in their lives, because the intensity of our gun-fire and the volumes of smoke-clouds, and a certain strange, whitish vapor which was wafted from our lines toward the enemy stirred their imagination, dulled by the daily din of guns, to a sense of something beyond the usual flight of shells in their part of the war zone.

“The English are attacking again!” was the message which brought out these men still living among ruined cottages on the edge of the slaughter-fields. They stared into the mist, where, beyond the brightness of the autumn sun, men were about to fight and die. It was the same scene that I had watched when I went up to the Loos redoubt in the September battle—a flat, bare, black plain, crisscrossed with the whitish earth of the trenches rising a little toward Loos and then falling again so that in the village there only the Tower Bridge was visible, with its steel girders glinting, high over the horizon line. To the left the ruins of Hulluch fretted the low-lying clouds of smoke, and beyond a huddle of broken houses far away was the town of Haisnes. Fosse 8 and the Hohenzollern redoubt were hummocks of earth faintly visible through drifting clouds of thick, sluggish vapor.

On the edge of this battleground the fields were tawny under the golden light of the autumn sun, and the broken towers of village churches, red roofs shattered by shell-fire, trees stripped bare of all leaves before the wind of autumn touched them, were painted in clear outlines against the gray-blue of the sky.

Our guns had been invisible. Not one of all those batteries which were massed over a wide stretch of country could be located before the battle by a searching glass. But when the bombardment began it seemed as though our shells came from every field and village for miles back, behind the lines.

The glitter of those bursting shells stabbed through the smoke of their explosion with little, twinkling flashes, like the sparkle of innumerable mirrors heliographing messages of death. There was one incessant roar rising and falling in waves of prodigious sound. The whole line of battle was in a grayish murk, which obscured all landmarks, so that even the Tower Bridge was but faintly visible.

Presently, when our artillery lifted, there were new clouds rising from the ground and spreading upward in a great dense curtain of a fleecy texture. They came from our smoke-shells, which were to mask our infantry attack. Through them and beyond them rolled another wave of cloud, a thinner, whiter vapor, which clung to the ground and then curled forward to the enemy's lines.

“That's our gas!” said a voice on one of the slag heaps, amid a group of observers—English and French officers.

“And the wind is dead right for it,” said another voice. “The Germans will get a taste of it this time!”

Then there was silence, and some of those observers held their breath as though that gas had caught their own throats and choked them a little. They tried to pierce through that bar of cloud to see the drama behind its curtain—men caught in those fumes, the terror-stricken flight before its advance, the sudden cry of the enemy trapped in their dugouts. Imagination leaped out, through invisibility, to the realization of the things that were happening beyond.

From our place of observation there were brief glimpses of the human element in this scene of impersonal powers and secret forces. Across a stretch of flat ground beyond some of those zigzag lines of trenches little black things were scurrying forward. They were not bunched together in close groups, but scattered. Some of them seemed to hesitate, and then to fall and lie where they fell, others hurrying on until they disappeared in the drifting clouds.