Cronje and the envelopment of Kimberley by Free State commandos under General Wessels.
In Natal practically the whole of the available defence force was swallowed up by the steady success of the invasion; on the western frontier two British towns were isolated and besieged; and Boer commandos were on the point of invading Cape Colony, where the Dutch population seemed on the verge of rebellion.
From October the military operations were confined to attempts to reduce guerrilla commandos which had taken the field.
At the close of 1900 the commandos under the direct influence of Louis Botha attacked the railway posts on the Middelburg railway and captured Helvetia.
In the meantime, while these posts were under construction, the harrying of the commandos by mobile columns was continued.
At last the Boer commandos gave up the struggle and on the 31st of May 1902 their leaders signed articles of peace at Pretoria.