Meanwhile the gunboats, under Commander Keppel, which had shelled the dervish advanced camp near Kerreri on 31st August, proceeded at daylight on 1st September, towing the Howitzer Battery to the right bank, whence, in conjunction with the Irregulars under Major Stuart Wortley, their advance south was continued. After two forts had been destroyed and the villages gallantly cleared by the Irregulars, the Howitzers were landed in a good position on the right bank, from whence an effective fire was opened on Omdurman, and, after a few rounds, the conspicuous dome over the Mahdi's tomb was partially demolished, whilst the gunboats, steaming past the town, also effectually bombarded the forts, which replied with a heavy, but ill-directed fire. At dawn on the following morning (2nd September), our mounted patrols reported the enemy advancing to attack, and by 6.30 a.m. the Egyptian Cavalry, which had been driven in, took up a position with the Horse Artillery, Camel Corps, and four Maxims on the Kerreri ridge on our right flank. At 6.40 a.m. the shouts of the advancing dervish army became audible, and a few minutes later their flags appeared over the rising ground, forming a semi-circle round our left and front faces. The guns of the 32nd Field Battery opened fire at 6.45 a.m. at a range of two thousand eight hundred yards, and the dervishes, continuing to advance rapidly, delivered their attack with all their accustomed dash and intrepidity. In a short time the troops and Maxims on the left and front were hotly engaged, whilst the enemy's riflemen, taking up positions on the slopes of Jebel Surgham, brought a long-range fire to bear on the zereba, causing some casualties, and their spearmen, continually reinforced from the rear, made attempt after attempt to reach our lines. Shortly after 8.0 a.m. the enemy's main attack was repulsed. At this period a large and compact body of dervishes was observed attempting to march round our right, and advancing with great rapidity they soon became engaged with our mounted troops on the Kerreri ridge. One of the gunboats which had been disposed to protect the river flanks at once proceeded down stream to afford assistance to the somewhat hardly-pressed mounted troops, and coming within close range of the dervishes inflicted heavy loss on them, upwards of 450 men being killed in a comparatively circumscribed area. The Artillery and Maxims on the left face of the zereba also co-operated, and the enemy was forced to retire again under cover of the hills.