All attacks on our position having failed, and the enemy having retired out of range, I sent out the 21st Lancers to clear the ground on our left front and head off any retreating dervishes from the direction of Omdurman. After crossing the slopes of Jebel Surgham they came upon a body of dervishes concealed in a depression of the ground; these they gallantly charged, but finding, too late to withdraw, that a much larger body of the enemy lay hidden, the charge was pressed home through them, and, after rallying on the other side, they rode back, driving off the dervishes, and remaining in possession of the ground. Considerable loss was inflicted on the enemy; but I regret to say that here fell Lieutenant R. Grenfell (12th Lancers) and twenty men. Meanwhile I had ordered the army to follow in echelon of brigades from the left. At 9.30 a.m. the front brigades having reached the sand ridge running from the west end of Jebel Surgham towards the river, a halt was ordered to enable the rear brigades to get into position, and I then received information that the Khalifa was still present in force on the left slopes of Surgham; a change of front half-right of the three leading brigades was, therefore, ordered, and it was during this movement that Macdonald's brigade became hotly engaged, whilst taking up position on the right of the echelon. Learning from General Hunter, who was with Macdonald's brigade, that he might require support, I despatched Wauchope's brigade to reinforce him, and ordered the remaining brigades to make a further change half-right. No sooner had Macdonald repelled the dervish onslaught than the force, which had retired behind the Kerreri hills, emerged again into the plain and rapidly advanced to attack him, necessitating a further complete change of front of his brigade to the right. This movement was admirably executed, and now, supported by a portion of Wauchope's brigade on the right and by Lewis's brigade enfilading the attack on the left, he completely crushed this second most determined dervish charge. Meantime Maxwell's and Lyttelton's brigades had been pushed on over the slopes of Jebel Surgham, and driving before them the dervish forces under the Khalifa's son, Osman Sheikh ed Din, they established themselves in a position which cut off the retreat on Omdurman of the bulk of the dervish army, who were soon seen streaming in a disorganised mass towards the high hills many miles to the west, closely pursued by the mounted troops, who cleared the right front and flanks of all hesitating and detached parties of the enemy.