When the infantry prepared for their final rush the Boers appeared, indeed, to be entirely disconcerted at an attack from an altogether unexpected direction. While for weeks they had been working incessantly to render the hill impregnable, they had prepared it only on the face against which they made sure the British infantry would dash itself. Nevertheless, in this, as in every action, the Boers, as soon as they saw that there was a risk of the position being taken, began early to make preparations for retreat. While keeping up a very heavy musketry fire on the woods through which the British infantry were advancing, they began to withdraw their guns.
The speed and skill with which on every occasion throughout the war they shifted heavy pieces of artillery from one point to another, or withdrew them altogether, was a new feature in warfare. Except when the garrison of Ladysmith, on two occasions of night sorties, surprised and destroyed three of their guns, they scarcely lost a piece either in the numerous actions during our advance to Ladysmith, or in their final retreat from that town. And similarly on the other side, of the very large number of guns employed at the fight on the Modder, at Magersfontein, and in the siege of Kimberley the whole were, with the exception of a few pieces captured when Cronje was surrounded, withdrawn in spite of the hurried evacuation of their position, a feat almost unparalleled even in an army accompanied only by field-artillery, and extraordinary indeed in the case of works mounting heavy siege-guns.
No farther advance was made till the afternoon, when General Buller arrived on the summit of Green Hill, and seeing that Hlangwane was not entrenched on its northern side, which was completely turned by our advance, sent Barton's brigade against it. But the loss of Monte Cristo had for the time quite taken the fight out of the Boers, and after maintaining a brisk fire for a short period, they evacuated the position as soon as the infantry neared the summit, and, hurrying down the western slope, crossed the Tugela. Three camps full of provisions, blankets, and the necessaries of Boer life fell into the hands of the captors, together with a large amount of rifle and Maxim ammunition. The place had been turned into a fortress. Trenches and some breastworks covered all the approaches by which the Boers might look for an attack, and as the whole mountain was covered with huge boulders, they were able to withstand even the storm of lyddite shell that was poured upon them.
On the following day Hart's brigade received orders to advance towards Colenso. This was still held in force by the Boers, but was now commanded by guns that had been got up the slopes of Hlangwane, and on Tuesday morning General Hart captured the position without serious loss, the Boers suffering severely from our shrapnel fire as they retreated, some by the iron bridge and others by a ford. Thorneycroft's Mounted Infantry, which was called up in the evening, took advantage of the discovery that a drift existed there, and a squadron forded the river in spite of a scattered fire from the Boers on the opposite bank. Another portion of the colonial force occupied Fort Wylie, a redoubt that had been thrown up by our troops when they occupied Colenso, but had been abandoned when the advance of the Boers to cut the line between Colenso and Frere forced them to retire.
The next morning Thorneycroft's regiment crossed, and, moving to the left, seized the kopjes facing Grobler's Kloof; the Boers, still suffering from the effect of their unexpected reverses, offered no resistance, but, abandoning all their camps, trenches, and redoubts, retired at once to the hill. The Scouts had followed Thorneycroft's Horse in support, and now, placing their horses under shelter in the abandoned entrenchments, prepared to act as infantry should the Boers take the offensive. This, however, they showed no intention of doing, and in the afternoon the troops who had crossed were able to examine the deserted camps. They presented very much the same appearance as those on Monte Cristo and Hlangwane. Many of them appeared to have been occupied by men of a better position, as many articles of luxury, choicer food, wearing apparel, newspapers, Bibles, fruit, and other signs of comfort littered the places; but even here dirt had reigned supreme. Although they must have been inhabited for a long time, it could be seen that no attempts had been made to clear away the refuse, or to make them in any degree tidy. As was natural, the effect of the heat of the sun on scraps of food, vegetables, and refuse of all kinds caused a sickening stench, and the soldiers spent as short a time as possible over their investigations. One article which would have been found in a British camp was altogether absent from those of the enemy, and it was a joke among our troops that the only piece of soap ever captured was found in the pocket of a dead Boer, and that its wrapper was still unopened.
The strength of the position was, however, even more surprising than the state of filth; every trench was enfiladed by another, great boulders were connected by walls of massive construction, this being specially the case where guns had been placed in position. Colenso itself had been in a similar manner rendered almost impregnable to a frontal attack, and could hardly have been captured by an assaulting force until Hlangwane had been taken.
The hills beyond the railway still covered the road bridge by their fire, and had the troops marched across it they would have suffered severely. Accordingly a pontoon train was sent through an opening in the Hlangwane range, and a bridge thrown over the Tugela north of Fort Wylie. The Dorsets, Middlesex, and Somersets crossed at once, and, ascending the kopjes, extended their line south until they were in communication with Thorneycroft's men, holding therefore the railway line along the river bank nearly half the distance between Colenso and Pieters station. Other regiments and artillery followed.
It was now six days since the advance had commenced, and for the past four fighting had been almost continuous. On Wednesday the three regiments advanced towards Grobler's Hill in order to ascertain what force was occupying it. They met with no opposition until they reached the lower slopes, nor could any Boers be seen moving. Then suddenly a heavy fire broke out from the boulders which covered the whole face of the hill, and afforded such perfect shelter that it had not been considered necessary to form entrenchments. As only a reconnaissance, and not an attack, had been ordered, the force retired, the Somersets, who were the leading regiment, having nearly a hundred casualties. The other regiments had as many more between them. The next day a continuous fire from all the points held by the Boers showed that large reinforcements had reached them. The Lancashire Brigade, under Colonel Wynne, started at two o'clock that afternoon to carry the kopjes up the Brook Spruit, which ran in the rear of Grobler's Kloof. The Royal Lancasters led the way, but as soon as they left the shelter of the ridges by the side of the railway they were exposed to a terrible fire, both in front and from Grobler's Kloof. The artillery on Hlangwane, and those still on the plain, endeavoured to silence the enemy's guns, but though they poured numbers of lyddite and shrapnel shells among them they were unable to do so. The Lancasters advanced with the greatest coolness up the spruit, followed by the South Lancasters. As they pressed forward they were met by a heavy rifle fire both from the kopjes in front and on the left. The Boers stuck to the hill until the Lancasters were within a hundred yards, then most of them slunk off. Not knowing this, the Lancasters lay under shelter for a few minutes until their ammunition pouches had been replenished, then, being joined by the South Lancasters and King's Royal Rifles, they rushed to the crest.
For the past two days the Dublin Fusiliers had been lying near Colenso. They had suffered very heavily in the first attack at Potgieter's Drift, but they now volunteered to take Grobler's Hill; and this, aided with the fire of the artillery and Colonel Wynne's brigade, they did in gallant style, the Boers being evidently nervous that they might find their retreat cut off should the Lancasters advance farther up the spruit.
On Friday afternoon the Irish Brigade advanced along the line, and then turned off towards Railway Hill, a steep jagged eminence almost triangular in shape, with one angle pointing towards the river. The sides were broken with sharp ledges covered with boulders. The railway passed through this, separating the last jagged ledge from the higher portion of the hill, which rises almost precipitously. Running back several hundred yards at the base of this line was a dip full of thorn trees. This deep winds round the rear of the hill, and here there was a large Boer Camp.