The necessity for swiftness of movement was in the air. Every man knew that Mapumulo was one of the most densely-populated districts in Natal. It was a purely Native district in which the ancient superstitions, habits and customs of the Zulus were still generally observed. The country was open and picturesque, with water and pasture abundant. The climate, moreover, was as fresh and exhilarating as that at Nkandhla. Such troops, e.g. Mackay's, as had not as yet clashed with the enemy, betrayed irrepressible eagerness to do so as soon as possible. Not less keenness was displayed by the Transvaalers under Barker, flushed with their recent and brilliant successes in Zululand. Thus, although at this critical moment, some 8,000 rebels were reported to have massed in Umvoti valley, barely a dozen miles from Thring's Post, the morale of the troops was excellent. And, one and all, the crushing blow at Mome still in their minds, were inspired with the feeling, not only that the concentration taking place was opportune and fitting, but that they were on the winning side and would still further stamp out the Rebellion, be the insurgents 10,000 or 20,000 in number. If ever a man rode a winning horse, knowing he was winning, that man at this moment was McKenzie. Eager co-operation by the Government in every conceivable direction, with a vigilant and sympathetic Governor, and every combatant, white or coloured, animated with a desire to put forth his best, that was what all these neo-Usutuites of Natal had to contend with. Thus, although some sharp conflicts with the rebels had still to come, it was a foregone conclusion that the Rebellion in those parts, notwithstanding the formidable numbers that had massed, would be crushed, and crushed in the speediest manner possible.

As soon as Woolls-Sampson reached Bond's Drift on the 1st July, after traversing an exceedingly difficult country for ox-transport, he received orders to push on with all speed to Thring's Post. At Bond's Drift he was joined by a squadron of Royston's Horse that had been recruited in the Cape Colony. He decided to leave his transport at Bond's Drift and to make a night march. Thring's Post was reached at 3 a.m. on the 2nd.

On leaving the drift, Woolls-Sampson instructed Major S.G. Campbell, D.L.I., to establish the garrison referred to with 35 D.L.I. (mounted infantry), 145 D.L.I. and one N.F.A. gun. At 11 a.m. on the 2nd, however, Campbell, then on the Zululand side, received a wire from Woolls-Sampson ordering him to come on at once to Thring's Post with a convoy of twenty-two waggons of supplies, it being imperative for these to reach Thring's Post the same night. By double-spanning (no punt being available, as the water was too low), the waggons were got across, and at 1 p.m. the convoy, consisting of 70 D.L.I., one N.F.A. gun (Beningfield), 50 Z.M.R. (Flindt), and some 15 N.D.M.R., moved forward. When about a mile from Mr. Hulett's house at Bulwer, a Native was seen on the road. As he appeared suspicious, he was made to accompany the convoy. Questioned as to the whereabouts of the enemy, who, it seemed, from a subsequent telegram from Woolls-Sampson, was lurking in the vicinity, the man denied all knowledge of it, though later on said he had heard it might assemble where the springs of two streams were but a few yards apart. A short halt was made at Bulwer and, just after sunset,[273] the convoy pushed on.

In the ordinary course, the best plan, with an enemy close at hand, would have been to lager at Bulwer. It was owing entirely to the stringency of the orders that an advance was made at that late hour. All were warned to be ready in case of attack. Bayonets were fixed and flankers thrown out. With darkness rapidly coming on, the flankers, for fear of being cut off, were not more than thirty yards off the road. Four mounted men of the advanced guard, consisting of a troop Z.M.R., under Capt. D.J.C. Hulley, marched along the road. A couple on the right and another couple on the left did the flanking, whilst seven were in the road in immediate rear of the front four. Behind, with an interval of about fifty yards, came 70 D.L.I. (with a Maxim gun), N.F.A. gun, an ambulance, and 22 waggons. A number of N.D.M.R. were riding on the vehicles. Z.M.R. (35) formed the rear-guard with two Rexer guns. The Native referred to was now noticed staring frequently to the right.

Owing to the likelihood of attack, the men marched as compactly as possible. The worst spot was undoubtedly the long cutting a mile after leaving Bulwer; nothing, however, was seen or heard of the enemy at that point. The little column next moved slowly across the low ridge between the end of the cutting and a small zinc store, known as Macrae's, on a knoll. The small clump of trees between the road and the store could be seen on the horizon ahead. The country about this part is rugged, though the three or four valleys in the vicinity, if steep, are, just there, small and not deeper than 100 feet. The road was hard and in good condition. After passing the store (at a distance of thirty yards), it is practically level and easy-going the whole way to Thring's Post.

The convoy moved along well, at an average speed of two and a half miles an hour (the usual pace for oxen on good roads). As, after leaving the cutting, danger of attack did not appear so imminent, Capt. Robert Armstrong, N.M.R., was sent on by himself to select a suitable bivouac. The advanced guard now went up the slight incline to the left of the store. When passing, a black dog that was following Hulley stood, and, ruffling its hair, began to growl and bark in the direction of the plantation on the right. Seeing this, Hulley became suspicious; the same instant, noticing a mass of armed Natives springing up from among the trees[274] (the sound they made being similar to the rising of a flock of guinea-fowl), he shouted a warning. The guard swung their horses round and began to fall back on the main body in rear as the rebels, some 300 strong, dashed forward from both sides of the road,[275] crying "Usutu! Usutu!" and using their knobsticks as well as assegais. Armstrong, by this time some 200 yards ahead, finding himself cut off, galloped back through the enemy, knocking down two or three, and using his revolver freely as he did so; notwithstanding the heavy fusillade then going on towards him, he succeeded in reaching the main body on the right without mishap. Steady and well-directed volleys were poured into the advancing enemy. He did not assume his characteristic formation, probably owing to the nature of the ground, but moved along the road en masse and with great dash. The distance from the store to the head of the column was barely eighty yards. The hot and effective fire, however, including case from the 15-pounder, stopped the advance, and caused the rebels to break to rear and right of the store.

Two minutes after the attack had failed, reinforcements having, in the meantime, moved up from the rebels' rear, another attack came, slightly to the left of where the first had taken place. This was well met by rifle fire and case, and resulted in a second and speedy retreat.

There being reason to suppose a third would follow, Campbell drew the men up in half-moon formation across the road, the convex side facing the store. The 15-pounder was placed in the centre of the road, the rear-guard was brought up, and the N.D.M.R. directed to fire right and left as necessity arose.

As anticipated, the third attack came, some twenty minutes after the second. It was from the same quarter, and was delivered after darkness had set in. It met with no better luck than the others. During this attack, one of the three Rexer guns was brought into action.[276]

Two hundred yards beyond the store, a road branched off to the left. At this point, a second impi, also about 300 strong, had at first lain in waiting, its object evidently being to allow the convoy to get between both impis, when it would have been attacked front and rear. The plan failed on account of the foremost body being prematurely forced to take action.