While all this had been going on, the advance of the army on Omdurman was continuing. Nor was it long before we saw the imposing array of infantry topping the sandhills near Surgham and flooding out into the plain which lay between them and the city. High over the centre brigade flew the Black Flag of the Khalifa, and underneath a smaller flash of red marked the position of the Headquarters Staff. The black masses of men continued to move slowly across the open ground while we fired at the flying Arabs, and at twelve o'clock we saw them halt near the river about three miles from the city. Orders now reached us to join them, and as the sun was hot, the day dragged, all were tired and hungry, and the horses needed water, we were not long in complying, and the remnants of the Dervish army made good their retreat unmolested. We marched back to the Nile. The whole force had halted to drink, to eat, and to rest at Khor Shambat. The scene was striking. Imagine a six hundred yards stretch of the Suez Canal. Both banks are crowded with brown- or chocolate-clad figures. The northern side is completely covered with the swarming infantry of the British division. Thousands of animals--the horses of the cavalry, the artillery mules, the transport camels--fill the spaces and the foreground. Multitudes of khaki-clad men are sitting in rows on the slopes. Hundreds are standing by the brim or actually in the red muddy water. All are drinking deeply. Two or three carcasses, lying in the shallows, show that the soldiers are thirsty rather than particular. On all sides water-bottles are being filled from the welcome Nile, which has come into the desert to refresh the weary animals and men.