The advance began by a movement of Ian Hamilton on April 22nd with eight hundred mounted infantry upon the waterworks. The enemy, who held the hills beyond, allowed Hamilton's force to come right down to the Modder before they opened fire from three guns. The mounted infantry fell back, and encamped for the night out of range. [Footnote: This was a remarkable exhibition of the harmlessness of shell-fire against troops in open formation. I myself saw at least forty shells, all of which burst, fall among the ranks of the mounted infantry, who retired at a contemptuous walk. There were no casualties.] Before morning they were reinforced by Smith-Dorrien's brigade (Gordons, Canadians, and Shropshires--the Cornwalls had been left behind) and some more mounted Infantry. With daylight a fine advance was begun, the brigade moving up in very extended order and the mounted men turning the right flank of the defence. By evening we had regained the waterworks, a most important point for Bloemfontein, and we held all the line of hills which command it. This strong position would not have been gained so easily if it had not been for Pole-Carew's and French's actions two days before, on their way to join Rundle, which enabled them to turn it from the south.
Ian Hamilton, who had already done good service in the war, having commanded the infantry at Elandslaagte, and been one of the most prominent leaders in the defence of Ladysmith, takes from this time onwards a more important and a more independent position. A thin, aquiline man, of soft voice and gentle manners, he had already proved more than once during his adventurous career that he not only possessed in a high degree the courage of the soldier, but also the equanimity and decision of the born leader. A languid elegance in his bearing covered a shrewd brain and a soul of fire. A distorted and half-paralysed hand reminded the observer that Hamilton, as a young lieutenant, had known at Majuba what it was to face the Boer rifles. Now, in his forty-seventh year, he had returned, matured and formidable, to reverse the results of that first deplorable campaign. This was the man to whom Lord Roberts had entrusted the command of that powerful flanking column which was eventually to form the right wing of his main advance. Being reinforced upon the morning after the capture of the Waterworks by the Highland Brigade, the Cornwalls, and two heavy naval guns, his whole force amounted to not less than seven thousand men. From these he detached a garrison for the Waterworks, and with the rest he continued his march over the hilly country which lies between them and Thabanchu.
One position, Israel's Poort, a nek between two hills, was held against them on April 25th, but was gained without much trouble, the Canadians losing one killed and two wounded. Colonel Otter, their gallant leader, was one of the latter, while Marshall's Horse, a colonial corps raised in Grahamstown, had no fewer than seven of their officers and several men killed or wounded. Next morning the town of Thabanchu was seized, and Hamilton found himself upon the direct line of the Boer retreat. He seized the pass which commands the road, and all next day he waited eagerly, and the hearts of his men beat high when at last they saw a long trail of dust winding up to them from the south. At last the wily De Wet had been headed off! Deep and earnest were the curses when out of the dust there emerged a khaki column of horsemen, and it was realised that this was French's pursuing force, closely followed by Rundle's infantry from Dewetsdorp. The Boers had slipped round and were already to the north of us.
It is impossible to withhold our admiration for the way in which the Boer force was manoeuvred throughout this portion of the campaign. The mixture of circumspection and audacity, the way in which French and Rundle were hindered until the Wepener force had disengaged itself, the manner in which these covering forces were then withdrawn, and finally the clever way in which they all slipped past Hamilton, make a brilliant bit of strategy.