But their vigilance, and that of the hawk-eyed man up in the Conning Tower, never relaxed. The besiegers had increased in number, and their guns were more numerous than before. A less acute man than Baden-Powell might have reasoned that at least one desperate effort would be made by them to carry the town before relief could come.
On Saturday, May 12th, the attack was made at the favourite hour of the Boer--the first grey of the morning. It was gallantly delivered by about three hundred volunteers under the command of Eloff, who had crept round to the west of the town--the side furthest from the lines of the besiegers. At the first rush they penetrated into the native quarter, which was at once set on fire by them. The first building of any size upon that side is the barracks of the Protectorate Regiment, which was held by Colonel Hore and about twenty of his officers and men. This was carried by the enemy, who sent an exultant message along the telephone to Baden-Powell to tell him that they had got it. Two other positions within the lines, one a stone kraal and the other a hill, were held by the Boers, but their supports were slow in coming on, and the movements of the defenders were so prompt and energetic that all three found themselves isolated and cut off from their own lines. They had penetrated the town, but they were as far as ever from having taken it. All day the British forces drew their cordon closer and closer round the Boer positions, making no attempt to rush them, but ringing them round in such a way that there could be no escape for them. A few burghers slipped away in twos and threes, but the main body found that they had rushed into a prison from which the only egress was swept with rifle fire. At seven o'clock in the evening they recognised that their position was hopeless, and Eloff with 117 men laid down their arms. Their losses had been ten killed and nineteen wounded. For some reason, either of lethargy, cowardice, or treachery, Snyman had not brought up the supports which might conceivably have altered the result. It was a gallant attack gallantly met, and for once the greater wiliness in fight was shown by the British. The end was characteristic. 'Good evening, Commandant,' said Powell to Eloff; 'won't you come in and have some dinner?' The prisoners--burghers, Hollanders, Germans, and Frenchmen--were treated to as good a supper as the destitute larders of the town could furnish.
So in a small blaze of glory ended the historic siege of Mafeking, for Eloff's attack was the last, though by no means the worst of the trials which the garrison had to face. Six killed and ten wounded were the British losses in this admirably managed affair. On May 17th, five days after the fight, the relieving force arrived, the besiegers were scattered, and the long-imprisoned garrison were free men once more. Many who had looked at their maps and saw this post isolated in the very heart of Africa had despaired of ever reaching their heroic fellow-countrymen, and now one universal outbreak of joybells and bonfires from Toronto to Melbourne proclaimed that there is no spot so inaccessible that the long arm of the empire cannot reach it when her children are in peril.
Colonel Mahon, a young Irish officer who had made his reputation as a cavalry leader in Egypt, had started early in May from Kimberley with a small but mobile force consisting of the Imperial Light Horse (brought round from Natal for the purpose), the Kimberley Mounted Corps, the Diamond Fields Horse, some Imperial Yeomanry, a detachment of the Cape Police, and 100 volunteers from the Fusilier brigade, with M battery R.H.A. and pom-poms, twelve hundred men in all. Whilst Hunter was fighting his action at Rooidam on May 4th, Mahon with his men struck round the western flank of the Boers and moved rapidly to the northwards. On May 11th they had left Vryburg, the halfway house, behind them, having done one hundred and twenty miles in five days. They pushed on, encountering no opposition save that of nature, though they knew that they were being closely watched by the enemy.