What held Lord Roberts's hand for some few days after he was ready to strike was the abominable weather. Rain was falling in sheets, and those who know South African roads, South African mud, and South African drifts will understand how impossible swift military movements are under those circumstances. But with the first clearing of the clouds the hills to the south and east of Bloemfontein were dotted with our scouts. Rundle with his 8th division was brought swiftly up from the south, united with Chermside to the east of Reddersberg, and the whole force, numbering 13,000 rifles with thirty guns, advanced upon Dewetsdorp, Rundle, as senior officer, being in command. As they marched the blue hills of Wepener lined the sky some twenty miles to the south, eloquent to every man of the aim and object of their march.

On April 20th, Rundle as he advanced found a force with artillery across his path to Dewetsdorp. It is always difficult to calculate the number of hidden men and lurking guns which go to make up a Boer army, but with some knowledge of their total at Wepener it was certain that the force opposed to him must be very inferior to his own. At Constantia Farm, where he found them in position, it is difficult to imagine that there were more than three thousand men. Their left flank was their weak point, as a movement on that side would cut them off from Wepener and drive them up towards our main force in the north. One would have thought that a containing force of three thousand men, and a flanking movement from eight thousand, would have turned them out, as it has turned them out so often before and since. Yet a long-range action began on Friday, April 20th, and lasted the whole of the 21st, the 22nd, and the 23rd, in which we sustained few losses, but made no impression upon the enemy. Thirty of the 1st Worcesters wandered at night into the wrong line, and were made prisoners, but with this exception the four days of noisy fighting does not appear to have cost either side fifty casualties. It is probable that the deliberation with which the operations were conducted was due to Rundle's instructions to wait until the other forces were in position. His subsequent movements showed that he was not a General who feared to strike.

On Sunday night (April 22nd) Pole-Carew sallied out from Bloemfontein on a line which would take him round the right flank of the Boers who were facing Rundle. The Boers had, however, occupied a strong position at Leeuw Kop, which barred his path, so that the Dewetsdorp Boers were covering the Wepener Boers, and being in turn covered by the Boers of Leeuw Kop. Before anything could be done, they must be swept out of the way. Pole-Carew is one of those finds which help to compensate us for the war. Handsome, dashing, debonnaire, he approaches a field of battle as a light-hearted schoolboy approaches a football field. On this occasion he acted with energy and discretion. His cavalry threatened the flanks of the enemy, and Stephenson's brigade carried the position in front at a small cost. On the same evening General French arrived and took over the force, which consisted now of Stephenson's and the Guards brigades (making up the 11th division), with two brigades of cavalry and one corps of mounted infantry. The next day, the 23rd, the advance was resumed, the cavalry bearing the brunt of the fighting. That gallant corps, Roberts's Horse, whose behaviour at Sanna's Post had been admirable, again distinguished itself, losing among others its Colonel, Brazier Creagh. On the 24th again it was to the horsemen that the honour and the casualties fell. The 9th Lancers, the regular cavalry regiment which bears away the honours of the war, lost several men and officers, and the 8th Hussars also suffered, but the Boers were driven from their position, and lost more heavily in this skirmish than in some of the larger battles of the campaign. The 'pom-poms,' which had been supplied to us by the belated energy of the Ordnance Department, were used with some effect in this engagement, and the Boers learned for the first time how unnerving are those noisy but not particularly deadly fireworks which they had so often crackled round the ears of our gunners.

On the Wednesday morning Rundle, with the addition of Pole-Carew's division, was strong enough for any attack, while French was in a position upon the flank. Every requisite for a great victory was there except the presence of an enemy. The Wepener siege had been raised and the force in front of Rundle had disappeared as only Boer armies can disappear. The combined movement was an admirable piece of work on the part of the enemy. Finding no force in front of them, the combined troops of French, Rundle, and Chermside occupied Dewetsdorp, where the latter remained, while the others pushed on to Thabanchu, the storm centre from which all our troubles had begun nearly a month before. All the way they knew that De Wet's retreating army was just in front of them, and they knew also that a force had been sent out from Bloemfontein to Thabanchu to head off the Boers. Lord Roberts might naturally suppose, when he had formed two cordons through which De Wet must pass, that one or other must hold him. But with extraordinary skill and mobility De Wet, aided by the fact that every inhabitant was a member of his intelligence department, slipped through the double net which had been laid for him. The first net was not in its place in time, and the second was too small to hold him.

While Rundle and French had advanced on Dewetsdorp as described, the other force which was intended to head off De Wet had gone direct to Thabanchu. 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. Louis Botha, the generalissimo, held all the strings in his hand, and the way in which he pulled them showed that his countrymen had chosen the right man for that high office, and that his was a master spirit even among those fine natural warriors who led the separate commandos.

Having got to the north of the British forces Botha made no effort to get away, and refused to be hustled by a reconnaissance developing into an attack, which French made upon April 27th. In a skirmish the night before Kitchener's Horse had lost fourteen men, and the action of the 27th cost us about as many casualties. It served to show that the Boer force was a compact body some six or seven thousand strong, which withdrew in a leisurely fashion, and took up a defensive position at Houtnek, some miles further on. French remained at Thabanchu, from which he afterwards joined Lord Roberts' advance, while Hamilton now assumed complete command of the flanking column, with which he proceeded to march north upon Winburg.

The Houtnek position is dominated upon the left of the advancing British force by Thoba Mountain, and it was this point which was the centre of Hamilton's attack. It was most gallantly seized by Kitchener's Horse, who were quickly supported by Smith-Dorrien's men. The mountain became the scene of a brisk action, and night fell before the crest was cleared. At dawn upon May 1st the fighting was resumed, and the position was carried by a determined advance of the Shropshires, the Canadians, and the Gordons: the Boers escaping down the reverse slope of the hill came under a heavy fire of our infantry, and fifty of them were wounded or taken. It was in this action, during the fighting on the hill, that Captain Towse, of the Gordons, though shot through the eyes and totally blind, encouraged his men to charge through a group of the enemy who had gathered round them. After this victory Hamilton's men, who had fought for seven days out of ten, halted for a rest at Jacobsrust, where they were joined by Broadwood's cavalry and Bruce Hamilton's infantry brigade. Ian Hamilton's column now contained two infantry brigades (Smith-Dorrien's and Bruce Hamilton's), Ridley's Mounted Infantry, Broadwood's Cavalry Brigade, five batteries of artillery, two heavy guns, altogether 13,000 men. With this force in constant touch with Botha's rearguard, Ian Hamilton pushed on once more on May 4th. On May 5th he fought a brisk cavalry skirmish, in which Kitchener's Horse and the 12th Lancers distinguished themselves, and on the same day he took possession of Winburg, thus covering the right of Lord Roberts's great advance.