The Success of Boer Guerrilla Operations 

On each occasion, an attack on a British camp was repulsed after fierce fighting, with the British forces – on every encounter – suffering more casualties than the Boers:

Vlakfontein (29 May 1901),
Moedwil (30 September 1901) and
Kleinfontein/Driefontein (24 October 1901).

In the eastern Transvaal:

General Ben Viljoen captured British positions at Helvetia on 29 December 1900,
General C.H. Muller stormed in and captured a camp at Wilmansrust on 12 June 1901,
General Louis Botha planned an invasion in Natal, and defeated a force at Blood River Poort (17 September), but his attacks on Itala and Fort Prospect were repulsed, and he returned to his operational area in the south-eastern Transvaal. There, on 30 October 1901, he surprised, stormed and decisively defeated a column at Bakenlaagte.

Source: Boer Guerrilla & British Counterguerrilla Operations, UFS