While Buller had established himself firmly upon the left of the Boer position, Pole-Carew had moved forward to the north of the railway line, and French had advanced as far as Swart Kopjes upon the Boer right. These operations on August 26th and 27th were met with some resistance, and entailed a loss of forty or fifty killed and wounded; but it soon became evident that the punishment which they had received at Bergendal had taken the fight out of the Boers, and that this formidable position was to be abandoned as the others had been. On the 28th the burghers were retreating, and Machadodorp, where Kruger had sat so long in his railway carriage, protesting that he would eventually move west and not east, was occupied by Buller. French, moving on a more northerly route, entered Watervalonder with his cavalry upon the same date, driving a small Boer force before him. Amid rain and mist the British columns were pushing rapidly forwards, but still the burghers held together, and still their artillery was uncaptured. The retirement was swift, but it was not yet a rout.
On the 30th the British cavalry were within touch of Nooitgedacht, and saw a glad sight in a long trail of ragged men who were hurrying in their direction along the railway line. They were the British prisoners, eighteen hundred in number, half of whom had been brought from Waterval when Pretoria was captured, while the other half represented the men who had been sent from the south by De Wet, or from the west by De la Rey. Much allowance must be made for the treatment of prisoners by a belligerent who is himself short of food, but nothing can excuse the harshness which the Boers showed to the Colonials who fell into their power, or the callous neglect of the sick prisoners at Waterval. It is a humiliating but an interesting fact that from first to last no fewer than seven thousand of our men passed into their power, all of whom were now recovered save some sixty officers, who had been carried off by them in their flight.