were on the leading face of the square, and the Naval Brigade, with their Gardner machine gun, at the rear left hand corner, nearest the wadi. Several officers and men of HMS Alexandra were killed at the battle. As the British halted to repel the Mahdist force, a gap opened up towards the rear left corner of the square. This was caused when Captain Lord Charles Beresford RN, commanding the Naval Brigade, ordered the Gardner gun to be run out on the left flank of the infantry square to provide covering fire. Colonel Frederick Gustavus Burnaby then gave an impromptu order for the Heavy Camel Regiment to wheel out of the square in support of the Gardner gun. The gun had been tested and found very reliable in Britain, but had not been tested in a desert with loose sand getting into its mechanism. It fired seventy rounds and then jammed, and as the crew tried to clear it they were cut down in a rush by the Dervishes. Out of the forty men in the Naval contingent, Lieutenants Alfred Piggott and Rudolph de Lisle were killed along with Chief Boatswain's Mate Bill (Billy) Rhodes and five other seamen and seven more were wounded. Beresford was 'scratched' on the left hand by a spear as he managed to duck under the gun. The weight of the rush pushed the sailors back into the face of the square. Several Dervishes got inside the square, but found the interior full of camels and could not proceed. The troops in the rear ranks faced about and opened fire into the press of men and camels behind them, and were able to drive the Dervishes out of the square and compel them to retreat from the field. The battle was short, lasting barely fifteen minutes from start to finish. Casualties for the British were nine officers and 65 other ranks killed and over a hundred wounded. The Mahdists lost 1,100 dead during the fifteen minutes of fighting, made all the worse by only 3,000–5,000 of the Dervish force being engaged. Among the Dervish dead was Musa wad Helu, one of the Mahdist chiefs. British national hero Colonel F. G. Burnaby of the Royal Horse Guards was killed by a spear to the throat. Frank Rhodes (brother of Cecil) distinguished himself when several horses were shot under him during the engagement, earning him a Distinguished