"Mark your man!"

The words, coolly spoken by Pariset on his left, set his imagination on fire. It was his privilege to have a share in their fight for freedom. He laid the rifle to his shoulder, marked his man along the sight, and a touch of his finger sped a bullet on its way.

For the next half-hour Kenneth lost account of everything but the task so suddenly thrust upon him. The deafening din of bursting shells and rifle fire, the quick silent activity of the ambulance bearers, the shouts and groans of men, were unnoticed by him in his constant preoccupation. He learnt afterwards how the Germans had pressed on with marvellous passive courage under the hail of lead and shell from the forts and trenches; how the gaps cleft in their close-packed ranks had been instantly filled up, as if men had sprung out of the earth. He fired until the chamber was empty, refilled and fired again, every now and again hearing Pariset's monotonous cry, "Mark your man!"

Presently there was a shrill whistle. Instantly, in the trench on either side of him, the men who had been lying flat sprang to their feet and dashed forward with a joyous shout. He was up and after them, running across the field, with bayonet out-thrust, towards the stalwart men in blue-grey, who had hitherto come nearer and nearer like the irresistible tide. But now he became suddenly conscious that the tide was receding. These stout warriors whom shot and shell had failed to daunt had turned tail at the sight of gleaming steel. Their ranks broke; they wavered, spun round, and fled in panic disorder across the field.

As Kenneth, with parched lips and trembling limbs, returned with Pariset from that victorious charge, an officer of the general's staff met them.

"This will never do, lieutenant," he said to Pariset; "we have plenty of brave fellows to man the trenches, but we haven't too many airmen, and we can't afford to risk them in field operations. You have no business here, you know."

"But wasn't it glorious, colonel?" said Pariset, glowing.

"They are men to be proud of. But I am quite serious; get back to your corps; there will be plenty of work for you. Has this man no uniform, by the way?"

"They have run short, colonel," said Pariset instantly. "We will rig him up in a day or two."

"See to it. If the Germans capture a man in civilian dress they will shoot him at sight. Now, get back at once."