On the 11th the enemy was moving through Swaziland by Mahamba, and this news caused Colonel Colville adroitly to arrange a plan which resulted in the intercepting of a convoy belonging to the Ermelo and Amsterdam commandos. The Colonel's column at the time was covering the construction, by General Bullock's troops, of the blockhouse line from Wakkerstroom. He pushed on hurriedly from Piet Retief and pounced on the Boers' much needed convoy, harassing Botha and his burghers, who scurried to escape before the British advance. By now the blockhouse line was sufficiently advanced to be a serious impediment to the enemy's movements: it not only forced him to abandon his waggons but also the two guns of 69th Battery which were lost during Gough's reverse at Blood River Poort. Brigadier-General Reeves (temporarily commanding in the absence of General Blood, who had left for India), with Colonels Park and Benson, continued to operate north and south of the Delagoa Railway. Colonel Benson, on the 10th, made a splendid march on an extremely dark night and surprised a party of Boers at Pullen's Hope (south of Middelburg), where he took 33 prisoners, 73 horses, together with cattle-carts and ammunition. On the 15th he, with two squadrons of the 2nd Scottish Horse and 19th Battalion Mounted Infantry, repeated his adventurous tactics, again surrounded and surprised the enemy at Tweefontein, and, though some made good their escape, added 10 Boers to his roll of prisoners and 250 oxen to his herd of cattle. Still indefatigable, he and his doughty band on the 17th, after a forty miles' march from Carolina, fell on the foe. The early mist was lifting round two laagers full of slumbering Boers at Middeldrift and Busby, when with a rush and a yell the British troops covered the scene. The usual rout, the usual stampede, and finally 54 prisoners--among them P. Botha, late Landdrost of Pretoria, and Commandant Nieuwhondt were captured, together with vehicles, horses, and cattle. Colonel Benson then pushed on and on--a triumphal progress--for he gleaned Boers wherever he went; 12 on the 28th near Bethel, and 7 early in October at Driefontein, in addition to horses, mules, and cattle, thus compelling those who evaded him to scuttle north denuded and demoralised. In the course of their chasing, this intrepid British band covered over fifty miles in nineteen hours. The Boers seldom spent a night in one place, and saddled up regularly at 3 A.M. in readiness for flight, therefore the captures made were the result not only of alertness and dash, but of indomitable perseverance.