Realizing all this, the Sirdar determined on a general advance, and on the 4th of April struck his camp at Ras-el-Hudi, and moved up the river to Abadar. Though this as a camping place much resembled the last, the troops, who had got tired of Ras-el-Hudi, with its endless sand storms and discomforts, rejoiced at the change, and the more so because it appeared to indicate fighting.
On the 5th, a final effort to draw Mahmoud was made. At daybreak General Hunter went out with eight squadrons of cavalry, eight Maxims, and a battery of horse artillery. When about 1,000 yards from the front of the enemy's position, the troops halted, and Hunter, with a few of his officers, went forward to obtain a nearer view.
The Dervishes showed themselves in no mood to be trifled with, and soon gave Hunter as much fighting as he wanted, for, at 9 a.m., two large bodies of Baggara horsemen came out of the bush right and left from the enemy's zeriba, and directed their efforts to getting round the flanks of the cavalry, whilst a third party fiercely charged them in front. Hunter, to avoid being cut off, had to gallop back to the main body, now engaged in repelling the attack.
In this they were assisted by the guns and Maxims on the left of the cavalry, and after a sharp struggle, in which the officers had to use their swords and revolvers, the Dervish onslaught was repulsed. A large body of footmen then streamed forth from Mahmoud's zeriba, and Hunter's force found it necessary to retreat to avoid being surrounded. As the cavalry fell back their retiring movement was covered by the Maxims, which continued firing, and practically saved the situation. The Dervish horsemen still followed, and pressed the rear and flanks of the retreating Egyptians, who more than once had to turn and charge to lessen the pressure. When this had been effected, the retreat was continued more deliberately, two squadrons from time to time dismounting, and with their carbines keeping the foe in check, whilst other squadrons took up a position one or two hundred yards in the rear. At last, about 10 a.m., a combined charge of cavalry, headed by Colonel Broadwood, drove back the assailants, and both the opposing forces withdrew at 1 p.m. The Egyptian troops, without being further molested, got back to camp, where, the sound of the cannonading having been heard, the army had turned out ready for action.
The Egyptian loss in the fight was not heavy, being only eight men killed and fourteen wounded. The Dervish loss was put as high as 200. This, however, was only an estimate, as the retreating Egyptians did not stop to count the slain. At the same time, as the Maxims fired 6,000 rounds, it seems only reasonable to suppose that someone was hit.
Although the engagement on the 5th showed that Mahmoud meant fighting, it indicated that, so far as related to moving his army out into the open to be destroyed, he was still a "conscientious objector," and, with a view to attacking him in his position, the forward movement of the Sirdar's army was resumed on the 6th April, when the troops brought up at the deserted village of Umdabbia, seven and a half miles from the Dervish camp. Here they remained for two days, whilst the final preparations for the attack were made.
At 5 p.m. on the 7th, after the stores and all superfluous baggage had been left in camp in charge of a half battalion of Egyptian infantry, the rest of the troops marched out into the desert. They moved in echelon, with the British brigade in front. Behind them was Macdonald's brigade; then came Lewis's brigade and the Camel Corps, Maxwell's brigade bringing up the rear. The route selected was parallel to the river, and over broken ground and desert sand. Although when night fell there was a bright moon, the sand, driven by a strong wind, obscured the view a good deal, and frequent halts had to be made to preserve the formation. When, after marching for three hours, a spot called Mutrus, three miles distant from the enemy, was reached, a halt was ordered, and the men, lying down in the desert, rested.