Frere had now become the British point of assembly. On the 8th of December there were there concentrated four infantry brigades, designated numerically as the 2nd, 4th, 5th and 6th, as well as the cavalry and artillery, which a week later took part in the battle of Colenso. The Boers on their side had taken advantage of the interior position they held, between the relieving column and the garrison, and of the fact that the latter could scarcely attempt to break out to the north, to withdraw their forces in great measure from the latter quarter, disposing them between Ladysmith and the Tugela in such wise that they might most easily be concentrated upon the centre, should the British attack be made there, as it first was, or upon either flank should a turning manœuvre be attempted. Their arrangements for such action appear to have been sagaciously made, as were also the preparations for contesting the passage of the river at Colenso.
On December 12 the final British movement began by the advance to Chieveley of the 6th Brigade, styled also the Fusilier Brigade, under Major-General Barton, with 1,000 colonial cavalry, three field batteries—eighteen pieces—and a number of naval guns, of which two were of 4.7-inches calibre, and fourteen were long-range 12-pounders. These were drawn by oxen, even when going into action; the two heavier guns requiring each fourteen yoke. These batteries were manned by 254 seamen, under the command of Captain Jones, of the cruiser "Forte." The detachment thus composed settled down a little in advance of Chieveley, just east of the railroad line, about three miles from Colenso and four from the kopjes on the far side of the Tugela overlooking the railroad bridge, upon the nearest of which stands Fort Wylie. The exact range to the latter, as determined the next day, was 7,200 yards.[26]
The following morning, Wednesday, December 13, at 7 A.M., the naval guns began a heavy bombardment upon the kopjes last mentioned, which lie nearly due north of Colenso, and upon which Sir Redvers Buller intended to make his main attack. The firing was maintained for six hours, and did in places considerable damage to such works as could be discerned; the 4.7-inch guns using lyddite shells, the bursting effect of which is extremely violent. Despite the severity of the test to which they were thus subjected, the Boers with admirable self-control refrained from any reply, and so preserved in great part the secret of their dispositions from detection by the enemy.
Next day, Thursday the 14th, the remaining British force marched out of Frere camp at 4.30 A.M. for Chieveley. The extreme heat of the days, summer being then well begun, combine with the usual advantages of timely starting to determine early movements in South Africa. The last comers pitched camp west of the rail, and about a mile nearer the Tugela than the 6th Brigade. The naval guns also moved forward three-quarters of a mile, and resumed the bombardment. The Boers again making no reply, the disappointment of their opponents at failing to uncover the position of their guns began to yield to an impression that these had been withdrawn, and even that possibly the passage would not be contested.
The total British armament now gathered on the south side of the Tugela has been variously stated at from 20,000 to 23,000 of all arms. The smaller figure seems the more probable. As regards the number of their opponents, there is no certain information. Nothing is known, however, to reduce the estimate previously given—30,000. Allowing for the necessity of holding in check the garrison at Ladysmith, the Boers could very well meet Buller in force numerically equal, without taking account of the passive advantages of a defensive position unusually strong.
That night were distributed the British orders for forcing the passage of the Tugela. They were issued by Sir Francis Clery, as commanding the South Natal Field Forces; but Sir Redvers Buller, by the language of his subsequent report, has left no doubt that the plan embodied his own ideas, as Commander-in-Chief in South Africa generally, but present on this scene. This report is the guide in the following account, the narratives of others having been by the writer used to supplement or, where necessary, to elucidate.
The general line of the Tugela, for a half-dozen miles above Colenso, is nearly due east, but its course is extremely winding. In this section two or three bends of nearly a mile in bulge occur, one of which had quite an influence in the action. The town itself lies in a bight of this kind, just west of the railroad, which crosses the river by a bridge, at that time destroyed. Immediately above it, however, an iron road-bridge still remained. The latter is the centre of a semicircle of hills, which surround it to the northward, their crests being on an average some 1,400 feet high and distant four and a half miles. The bridge was also the centre of battle, as planned by the British. Near it, on the north side, are "four small, lozenge-shaped, steep-sided, hog-backed hills," the one nearest the water, on which Fort Wylie stands, being the lowest, the others rising in succession behind. They were all "strongly entrenched, with well-built, rough stone walls along every crest that offered, there being in some cases three tiers." It was upon these that Buller designed to make his principal effort. "It was a very awkward position to attack," he says, "but I thought that if I could effect a lodgment under cover of Fort Wylie the other hills would to a great extent mask each other, and shell-fire and want of water would clear them out in time."
The report of the Commander-in-Chief, dealing almost exclusively with the course of events as they happened, does not particularly describe the remaining features of the field. These must be supplied from other sources. Above—west of—Fort Wylie, on the north side, the hills recede somewhat from the river and rise to one of the crests mentioned by Buller, known as Grobler's Kloof. This also was heavily fortified, commanding, it is said, Fort Wylie and the neighbouring hills. If this be so, success at the latter, had it been achieved, would quickly have elicited proof of the fact. Under Grobler's Kloof, some two or three miles up the river, was a drift or ford, over which the plan of attack proposed to pass the 5th or Irish Brigade, commanded by Major-General Hart, forming the left flank of the British line. This done, the brigade would move down stream to reinforce the main attack on the Fort Wylie kopjes.
Below Fort Wylie the river continued south-easterly for something less than a mile. Then with a bold sweep it curves north, and round west, to a point half a mile north-east of the fort, when it again flows due north for a couple of miles. From this formation results a tongue of land, embraced in the curve, projecting to the south-east, and much resembling a bastion, to which the subsequent northern stretch serves as a curtain. In general effect, however, the river may be broadly said to make below Wylie a sharp turn to the north, running that way for two or three miles, after which it resumes its general easterly course towards the sea. The point where it thus resumes its direction is well to the north—rear—of the line of Boer entrenchments, between Grobler's and Wylie, so that, if their positions were prolonged on that same line, they would be separated by the river. If, on the other hand, instead of so continuing, the entrenched works were made to follow the river course north, keeping always on the same side of the Tugela, the main Boer positions, confronting the bridge, would be open to enfilading fire from the eastern hills on the opposite side below the bend.
Such conditions would seem to make this eastern part of the Boers' position—their left flank—the weakest. The outcome of the campaign tends to confirm this conclusion, which the author has been interested to find also in a letter, not only composed, but published, before the abortive attempt to turn the west flank at Spion Kop. "To the east of Fort Wylie," wrote a correspondent of the London Times on December 21, "the Tugela bends sharply northward, and here the left flank of the Boer position is on the south sides of the river, on a solitary hill called Hlangwane. This is doubtless the weakest spot in the Boer position, for if an enemy could take it by storm or otherwise, he could render the kopjes north of Colenso untenable."[27] This shows that the Boers preferred to have their lines divided by a river fordable only in places, and at times impassable through floods, rather than leave their flank uncovered to artillery, a decision probably correct. As shown by the plans, Hlangwane, as an eminence, stood by itself; a mile and a half to its east and rear was another height named Monte Cristo, and again to the westward a range called Inhlawe Mountain.