After the clearing of the South East of the Orange Free State, Lord Roberts began his offensive on 3 May 1900, gathering a force around 40,000-50,000 strong.

The military operation was a success, with British Forces entering Pretoria on 5 June, and the Boers surrendering the capital shortly after.

Forces led by Ian Hamilton and John French hunted Boer commandos in the south, composing of mostly colonial and cavalry units.

Through March, April, and early May, the British cleared the region of hostile commandos, mostly led by Christiaan de Wet.

By the beginning of May, the clearing of the south east Orange Free State had been complete, and so Lord Roberts decided to move his army north towards Pretoria.

[6] British cavalry blew up the railway line from Deloga to Pretoria, and quickly began moving in to surround the enemy capitol.

[7][1] Whilst Lord Roberts was advancing from Bloemfontein, General Buller was busy clearing Northern Natal, which was still laden with Boers, even after the Siege of Ladysmith had ended in February.