They were father and son.

About half-past ten the first assault was repulsed, and for a time the Boers disappeared, but one could see reinforcements massing behind a hill called the "Red Kopje," across the deep stream of the Bester's valley.
The second main attack was delivered about one, and the third during the storm at five.

I think, after the first assault, the Boer line never advanced beyond the cover of the edge.

But their incessant fire was supported by a storm of long-range bullets from the heights across the valley.

The position was not finally cleared till nearly seven.
The attack and the defence were equally gallant, as at Waggon Hill.