Swallow by H. Rider Haggard

When Sihamba finished her talk with the captains of Dingaan the sun was already sinking. Still the Umpondwana thought that the Zulus would attack at once, but these shouted to the defenders that they might rest easily till the dawn, since they wished to have daylight by which to divide the spoil. And at daylight the attack came. Driving the men of Bull-Head in front of them much against their will, for they knew these to be cowards, and wished to make mock of them, company by company the Zulus rushed at the stone wall, though many of them were killed and often they were driven back. But always they came on laughing and shouting their war-cry till the arms of the Umpondwana grew weary with stabbing at them as their plumed heads appeared above the level of the wall.

Still, fighting under the eye of Sihamba, whose bitter tongue they feared, her people held their own, for indeed the place was almost impregnable to the attacks of men armed only with spears however brave they might be, and had it been defended by warriors of true Zulu blood it could never have been taken.