Suddenly in the gloom at which he strains his eyes, he perceives a pin-point of light. It flickers for an instant and then projects itself in a ray of intense brilliance widening from the point of origin, right across the gulf. It falls in a great oval of blinding whiteness upon the hill-side to his right. Its hard white glare is painful in its brutality. Everything outside the ray is swallowed in a blackness where even the stars are lost. The white oval on the hill-side moves slowly. It brings into vivid relief a long line of loosely piled stones behind which lie, in many attitudes, the motionless bodies of men. Some, which have fallen across the heap of stones, throw grotesque shadows, intensely black. The white oval stays its slow progress, vignettes them from the night. In the centre of the picture one of these figures stirs, raises itself upon one elbow and rubs its eyes stupidly like a man wakened from sleep by the sudden glare. Instantly a group of sharp reports, multiplied by rapidly reiterated echoes, breaks from the distant blackness. The figure sinks quickly, a dark hole visible in the ghastly whiteness of its face. The oval begins to move again, assuring the men who lurk far back in the night that this uncompleted shelter-trench is held only by the dead. Suddenly the light is cut off. The stars reappear in a sky that seems strangely pallid. The mountain masses silhouette themselves more definitely than before against their tenebrous background, the outlines of the high summits, where some snow still lies, picked out in a grey that has just the faintest tinge of yellow. From the black gulf below eddies of mist boil up like steam from a mighty cauldron, veiling the shrinking stars. A wall of fog rolls along the hill-side, blots out the mountains and the sky. The captain turns instantly and calls down an order in a carefully restrained voice. The company in the hollow springs up and over the crest with the agility of born mountaineers. They follow their captain at a quick pace into the bank of fog. Behind them is a murmur of voices. The other companies of the battalion are coming up, deploying rapidly into line when they reach the crest. The first company has halted for a moment to allow time for their arrival. Seconds are precious. At any moment the cloud may roll away, expose them to the glare of hostile searchlights and a storm of bullets. In two long lines the battalion moves briskly down the hill, leaving the unfinished shelter-trench upon its right. Behind, another battalion is coming up in support.