Then at last the Zulu generals saw that the points of the horns had met behind the white men, and the moment was ripe. Abandoning its silence and slow advance, the breast of the impi raised the war-cry and charged, rolling down upon the red coats like a wave of steel. So swift and sudden was this last charge, that many of the soldiers had no time to fix bayonets. For a few moments the scattered companies held the impi back, and the black stream flowed round them, then it flowed _over_ them, sweeping them along like human wreckage. In a minute the defence had become an utter rout. Some of the defenders formed themselves into groups and fought back to back till they fell where they stood, to be found weeks afterwards mere huddled heaps of bones. Hundreds of others fled for the waggon road, to find that the Undi regiment, passing round the Isandhlwana mountain, had occupied it already. Back they rolled from the hedge of Undi spears to fall upon the spears of the attacking regiments. One path of retreat alone remained, a dry and precipitous 'donga' or watercourse, and into this plunged a rabble of men, white and black, mules, horses, guns, and waggons. Meanwhile the last act of the tragedy was being played on the field of death. With a humming sound such as might be made by millions of bees, the Zulu swarms fell upon those of the soldiers who remained alive, and, after a desperate resistance, stabbed them. Wherever the eye looked, men were falling and spears flashing in the sunshine, while the ear was filled with groans of the dying and the savage _S'gee S'gee_ of the Zulu warriors as they passed their assegais through and through the bodies of the fallen. Many a deed of valour was done there as white men and black grappled in the death-struggle, but their bones alone remained to tell the tale of them. Shortly after the disaster, one of the survivors told the present writer of a duel which he witnessed between a Zulu and an officer of the 24th regiment. The officer having emptied his revolver, set his back against the wheel of a waggon and drew his sword. Then the Zulu came at him with his shield up, turning and springing from side to side as he advanced. Presently he lowered the shield, exposing his head, and the white man falling into the trap aimed a fierce blow at it. As it fell the shield was raised again, and the sword sank deep into its edge, remaining fixed in the tough ox-hide. This was what the Zulu desired; with a twist of his strong arm he wrenched the sword from his opponent's hand, and in another instant the unfortunate officer was down with an assegai through his breast.