In order to strike unexpectedly, Lord Roberts had not only made a strong demonstration at Koodoosdrift, at the other end of the Boer line, but he had withdrawn his main force some forty miles south, taking them down by rail to Belmont and Enslin with such secrecy that even commanding officers had no idea whither the troops were going. The cavalry which had come from French\'s command at Colesberg had already reached the rendezvous, travelling by road to Naauwpoort, and thence by train. This force consisted of the Carabineers, New South Wales Lancers, Inniskillings, composite regiment of Household Cavalry, 10th Hussars, with some mounted infantry and two batteries of Horse Artillery, making a force of nearly three thousand sabres. To this were added the 9th and 12th Lancers from Modder River, the 16th Lancers from India, the Scots Greys, which had been patrolling Orange River from the beginning of the war, Rimington\'s Scouts, and two brigades of mounted infantry under Colonels Ridley and Hannay. The force under this latter officer had a severe skirmish on its way to the rendezvous and lost fifty or sixty in killed, wounded, and missing. Five other batteries of Horse Artillery were added to the force, making seven in all, with a pontoon section of Royal Engineers. The total number of men was about five thousand. By the night of Sunday, February 11th, this formidable force had concentrated at Ramdam, twenty miles north-east of Belmont, and was ready to advance. At two in the morning of Monday, February 12th, the start was made, and the long sinuous line of night-riders moved off over the shadowy veld, the beat of twenty thousand hoofs, the clank of steel, and the rumble of gunwheels and tumbrils swelling into a deep low roar like the surge upon the shingle.
Two rivers, the Riet and the Modder, intervened between French and Kimberley. By daylight on the 12th the head of his force had reached Waterval Drift, which was found to be defended by a body of Boers with a gun. Leaving a small detachment to hold them, French passed his men over Dekiel\'s Drift, higher up the stream, and swept the enemy out of his position. This considerable force of Boers had come from Jacobsdal, and were just too late to get into position to resist the crossing. Had we been ten minutes later, the matter would have been much more serious. At the cost of a very small loss he held both sides of the ford, but it was not until midnight that the whole long column was brought across, and bivouacked upon the northern bank. In the morning the strength of the force was enormously increased by the arrival of one more horseman. It was Roberts himself, who had ridden over to give the men a send-off, and the sight of his wiry erect figure and mahogany face sent them full of fire and confidence upon their way.
But the march of this second day (February 13th) was a military operation of some difficulty. Thirty long waterless miles had to be done before they could reach the Modder, and it was possible that even then they might have to fight an action before winning the drift. The weather was very hot, and through the long day the sun beat down from an unclouded sky, while the soldiers were only shaded by the dust-bank in which they rode. A broad arid plain, swelling into stony hills, surrounded them on every side. Here and there in the extreme distance, mounted figures moved over the vast expanse – Boer scouts who marked in amazement the advance of this great array. Once or twice these men gathered together, and a sputter of rifle fire broke out upon our left flank, but the great tide swept on and carried them with it. Often in this desolate land the herds of mottled springbok and of grey rekbok could be seen sweeping over the plain, or stopping with that curiosity upon which the hunter trades, to stare at the unwonted spectacle.
So all day they rode, hussars, dragoons, and lancers, over the withered veld, until men and horses drooped with the heat and the exertion. A front of nearly two miles was kept, the regiments moving two abreast in open order; and the sight of this magnificent cloud of horsemen sweeping over the great barren plain was a glorious one. The veld had caught fire upon the right, and a black cloud of smoke with a lurid heart to it covered the flank. The beat of the sun from above and the swelter of dust from below were overpowering. Gun horses fell in the traces and died of pure exhaustion. The men, parched and silent, but cheerful, strained their eyes to pierce the continual mirage which played over the horizon, and to catch the first glimpse of the Modder. At last, as the sun began to slope down to the west, a thin line of green was discerned, the bushes which skirt the banks of that ill-favoured stream. With renewed heart the cavalry pushed on and made for the drift, while Major Rimington, to whom the onerous duty of guiding the force had been entrusted, gave a sigh of relief as he saw that he had indeed struck the very point at which he had aimed.
The essential thing in the movements had been speed – to reach each point before the enemy could concentrate to oppose them. Upon this it depended whether they would find five hundred or five thousand waiting on the further bank. It must have been with anxious eyes that French watched his first regiment ride down to Klip Drift. If the Boers should have had notice of his coming and have transferred some of their 40-pounders, he might lose heavily before he forced the stream. But this time, at last, he had completely outmanoeuvred them. He came with the news of his coming, and Broadwood with the 12th Lancers rushed the drift. The small Boer force saved itself by flight, and the camp, the wagons, and the supplies remained with the victors. On the night of the 13th he had secured the passage of the Modder, and up to the early morning the horses and the guns were splashing through its coffee-coloured waters.
French\'s force had now come level to the main position of the Boers, but had struck it upon the extreme left wing. The extreme right wing, thanks to the Koodoosdrift demonstration, was fifty miles off, and this line was naturally very thinly held, save only at the central position of Magersfontein. Cronje could not denude this central position, for he saw Methuen still waiting in front of him, and in any case Klip Drift is twenty-five miles from Magersfontein. But the Boer left wing, though scattered, gathered into some sort of cohesion on Wednesday (February 14th), and made an effort to check the victorious progress of the cavalry. It was necessary on this day to rest at Klip Drift, until Kelly-Kenny should come up with the infantry to hold what had been gained. All day the small bodies of Boers came riding in and taking up positions between the column and its objective.
Next morning the advance was resumed, the column being still forty miles from Kimberley with the enemy in unknown force between. Some four miles out French came upon their position, two hills with a long low nek between, from which came a brisk rifle fire supported by artillery. But French was not only not to be stopped, but could not even be retarded. Disregarding the Boer fire completely the cavalry swept in wave after wave over the low nek, and so round the base of the hills. The Boer riflemen upon the kopjes must have seen a magnificent military spectacle as regiment after regiment, the 9th Lancers leading, all in very open order, swept across the plain at a gallop, and so passed over the nek. A few score horses and half as many men were left behind them, but forty or fifty Boers were cut down in the pursuit. It appears to have been one of the very few occasions during the campaign when that obsolete and absurd weapon the sword was anything but a dead weight to its bearer.
And now the force had a straight run in before it, for it had outpaced any further force of Boers which may have been advancing from the direction of Magersfontein. The horses, which had come a hundred miles in four days with insufficient food and water, were so done that it was no uncommon sight to see the trooper not only walking to ease his horse, but carrying part of his monstrous weight of saddle gear. But in spite of fatigue the force pressed on until in the afternoon a distant view was seen, across the reddish plain, of the brick houses and corrugated roofs of Kimberley. The Boer besiegers cleared off in front of it, and that night (February 15th) the relieving column camped on the plain two miles away, while French and his staff rode in to the rescued city.