Here is his LvW application - wounded twice - once at Paardeberg on 17 February 1900 and again at Senekal on 22 June 1900.
This last action has been hard to track down - the closest I have come is the 23rd June 1900 thanks to an entry in Amery (below) - if you are able to shed more light on the engagement it would be appreciated.
Senekal, 22 June 1900 from Amery, Volume IV page 300: -
“The only force of Free Staters outside the area contemplated for the first “big drive” in the war was the Winburg Commando in the Doornberg, under the command of Roux and Haasbroek. They were a menace not only to the railway but also to Clement’s and Rundle’s convoys marching to and from Winburg. Thus, on 23 June when Clement was going from Senekal to Winburg with a convoy of sick, he was attacked half-way by Roux, and, though he succeeded in driving off his assailants, he inflicted no serious damage upon them.”