So, when WW1 broke out, the two Boer republics had been added to the British Empire just few years ago. Yet, the Boers were one of the largest British forces in Africa. It seems to me that should be easily reversible.
So what would have happened if between 1906 and 1914 the integration of South Africa didnt happen so smoothly? And what if as a result of that the Boers used World War 1 as a chance and revolted in some form.