He was headed off by Benson in an attempt to get away up the Steelpoort Valley, where next day 100 Boers gave themselves up to Blood. He next tried the Blood River, and passing down the valley crossed the Olifant on April 22, almost within sight of Beatson, who was watching the drifts. A few days later he crossed the railway and joined Botha at Ermelo. Early in May the active operations north of the Delagoa Bay Railway ceased. As in French's campaign, so also in Blood's, the results were chiefly negative. A glut of live stock was rounded up, a considerable amount of ammunition and all the guns known to be in the district were taken, and 1,100 Boers either surrendered or were made prisoners. The columns were withdrawn, as troops were in request in the districts lately driven by French; and Plumer, who had had no opportunity of engaging actively in the movement, was recalled. He was succeeded at Pietersburg by Grenfell. At the end of May Dixon set out westwards from Naauwpoort in the Magaliesberg district on a raiding expedition. He trekked for three days and then ran unexpectedly into a Boer column at Vlakfontein. He was attacked through a veil of smoke from a grass fire which the slim enemy had lit to windward. In spite of this disadvantage he held his own and compelled the Boers to retire, but soon, however, found it advisable to retire himself and returned to Naauwpoort. The column which had engaged Dixon was under the command of Kemp, whom the Intelligence had after the Hartebeestfontein operations despatched in imagination with Delarey to the south, where they were reported to be concentrating. Kemp, however, had returned to the Zwartruggens. After the Vlakfontein affair he found columns approaching him from all sides and dissolved his command. Delarey had gone south, and was now in the Orange River Colony. The northward retreat of De Wet through the Orange River Colony in March, 1901, drew in its trail a host of British columns, which plodded sturdily across the veld with scanty results. He endeavoured to systematize _guerilla_ by parcelling out the late Free State into districts under commandants acting locally: Lord Kitchener retorted by parcelling it out into a smaller number of districts, each district being in charge of a general officer armed with columns with which to worry the local commandants. Many divagations ensued; few profitable results were attained. Of these divagations the most conspicuous was a visit paid by Rundle to the Brandwater Basin, wherein the enemy was reported to be once more concentrated. There were, in fact, less than 1,000 burghers within the Basin, but these pressed severely on him when, at the end of May, he made his exit through the Golden Gate with one prisoner of war.