LEGEND by David A. Gemmell

He learned of mass centres, parallel vectors and the need for equilibrium between external and inter­nal forces. His appetite for knowledge was voracious and Rebow found himself warming to the ugly Nadir tribesman. Before long the slender Ventrian invited Khitan to share his home, where studies could be carried on long into the night. The Nadir was tire­less. Often Rebow would fall asleep in his chair, only to wake several hours later and find the small, one-armed Khitan still studying the exercises he had set him. Rebow was delighted. Rarely had a student showed such aptitude, and never had he found a man with such a capacity for work.

Every force, learnt Khitan, has an equal and opposite reaction, so that, for example, a jib exerting a push at its top end must also exert an equal and opposite push at the foot of its supporting post. This was his introduction to the world of creating stability through understanding the nature of stress.

For him the University of Tertullus was a kind of paradise.

On the day he had left for home the little tribes­man wept as he embraced the stricken Ventrian. Rebow had begged him to reconsider; to take a post at the university, but Khitan had not the heart to tell him he was not in the least tempted. He owed his life to one man, and dreamed of nothing but serving him.

At home once more, he set to work. Under con­struction the towers would be tiered, creating an artificial base five times the size of the structure. While being moved into position, only the first two levels would be manned, creating a mass weight low to the ground. Once positioned by a wall, ropes would be hurled from the centre of the tower and iron pins hammered into the ground, creating stab­ility. The wheels would be iron-spoked and rimmed, and there would be eight to a tower, to distribute the weight.

Using his new knowledge, he designed catapults and ballistae. Ulric was well pleased and Khitan ecstatic.

Now, bringing his mind back to the present, Khitan climbed to the top of the tower, ordering the men to lower the hinged platform at the front. He gazed at the walls three hundred paces distant and saw the black-garbed Deathwalker leaning on the battlements.

The walls were higher than at Gulgothir and Khitan had added a section to each tower. Ordering the platform to be raised once more, he tested the tension in the support ropes and climbed down through the five levels, stopping here and there to check struts or ties.

Tonight his four hundred slaves would go to work beneath the walls, chipping away at the rocky floor of the Pass and placing the giant pulleys every forty paces. The pulleys, six feet high and cast around greased bearings, had taken months to design and years to construct to his satisfaction, finally being completed at the ironworks of Lentria’s capital a thousand miles to the south. They had cost a fortune and even Ulric had blanched when the final figure was estimated. But they had proved their worth over the years.

Thousands of men would pull a tower to within sixty feet of a wall. Thereafter the line would shrink as the gap closed; the three-inch diameter ropes could be curled round the pulleys, passed under the towers and hauled from behind.

The slaves who dug and toiled to create the pulley beds were protected from archers by movable screens of stretched oxhide. But many were slain by rocks hurled from the walls above. This was of no concern to Khitan. What did concern him was possible damage to the pulleys, and these were not protected by iron casing.

With one last lingering look at the walls, he made his way back to his quarters in order to brief the engineers. Druss watched him until he entered the city of tents which now filled the valley for over two miles.

So many tents. So many warriors. Druss ordered the defenders to stand down and relax while they could, seeing in their faces the pinched edge of fear, the wide eyes of barely controlled panic. The sheer scale of the enemy had cut into morale. He cursed softly, stripped off his black leather jerkin, stepped back from the battlements and lowered his huge frame to the welcoming grass beyond. Within mo­ments he was asleep. Men nudged one another and pointed; those closest to him chuckled as the snoring began. They were not to know that was his first steep for two days, nor that he lay there for fear that his legs would not carry him back to his quarters. They knew only he was Druss: the Captain of the Axe.