On the 21st two batteries of artillery and also the 10th Hussars were moved out to Handouk.
On the 23rd the Gordon Highlanders were sent to a point near the entrance of the Tamanieb valley to form a new zeriba in conjunction with a company of the 89th, which marched from Souakim to join them, with water and stores.
On the 25th General Graham marched with two brigades, under Buller and Davis respectively, to a zeriba eleven miles from Souakim.
The march-out was a most exhausting one on account of the heat, and between 300 and 400 men fell out of the ranks. There were numerous cases of sunstroke. According to one account, the number of men who fell out was equal to one-fourth of the whole force, the rear of which, it is said, resembled a routed army. Many of the sick found room in the ambulances, and others trudged along as best they could on foot. The men were now becoming tired and disgusted with the campaign, and there was a good deal of grumbling and dissatisfaction in the ranks.
The whole force bivouacked when nine miles from Souakim, and the night's rest restored the men who had fallen out during the march, and all but four returned to duty on the morning of the 26th.
Stewart's brigade of cavalry left the camp shortly after 9 a.m. for Tamanieb. Graham's orders were that operations should be confined to reconnoitring, the troops to fall back on learning the enemy's position. For the first five miles the route lay across a plain through patches of mimosa. After this, the hills were reached. Small parties of the enemy were seen mounted on dromedaries, watching the force. On a hill 600 feet high Stewart established a heliograph station for signalling to the zeriba in the rear. After another five miles' march, a second signal station was placed among the hills. From this point the enemy's position could be seen two miles distant. Behind them were the wells of Tamanieb. The number of the enemy appeared, at first, to be about 3,000, though it subsequently turned out much less. It was now half-past one, and the Mounted Infantry advanced to within 700 yards, keeping up a fire meanwhile. This skirmishing was continued till 3 o'clock, when, the object of the reconnaissance having been attained, General Stewart withdrew to the first signal station. Here he was met by General Buller, who had advanced with the 75th and 89th Regiments, having left camp at ten. In the afternoon the remainder of the force, with the exception of the 65th Regiment and the sick, also advanced, and joined Buller at the first signal station, where a new zeriba was formed. A quiet night was passed at the advanced zeriba.
Shortly after 5 a.m. on the following day, the entire force, numbering 3,000 men, marched out. The Mounted Infantry scouted along the ridges to the right and left flanks, but there was for some time no sign of the enemy.
It was cool at first, owing to the early hour at which the march commenced, and there were no sick. The men were in the best of spirits, not only at the prospect of offering the enemy battle, but because they believed that the impending engagement would end the campaign. The troops went forward very slowly on account of the rocky nature of the ground. About fifty men fell out owing to the heat. As the hostile position was approached, the Mounted Infantry and a squadron of Hussars were sent forward to occupy the ground held during the skirmish of the previous day. When they advanced the enemy opened a fire, to which the troopers replied.
At nine Graham brought up the reserve of the Mounted Infantry, leaving the two Infantry Brigades in the rear. Shortly after this, the enemy's fire slackened. Half-an-hour afterwards the 1st Brigade had advanced far enough for the 9-pounders to open fire on the enemy, of whom only small bodies could be seen.
At ten the cavalry skirmishers were within 100 yards of the Tamanieb Khor, and the Soudanese were seen retreating en masse to the right and left. Close at hand were the wells, and the troops, instead of pursuing, were halted for a quarter of an hour to water the horses, which were suffering greatly from thirst. The soldiers, too, drank copiously after their march. When the cavalry formed up and moved along the wells to the village the enemy had disappeared. There was no resistance, and Graham ordered the burning of the village. This was immediately carried out, and the huts, some 300 in number, were soon in a blaze.