Excerpts from Books and Wikipedia
"Following Lord Carnarvon's successful introduction of federation in Canada, it was thought that similar political effort, coupled with military campaigns, might succeed with the African kingdoms, tribal areas and Boer republics in South Africa. In 1874, Sir Henry Bartle Frere was sent to South Africa as High Commissioner for the British Empire to bring such plans into being. Among the obstacles were the presence of the independent states of the South African Republic and the Kingdom of Zululand and its army. Frere, on his own initiative, without the approval of the British government and with the intent of instigating a war with the Zulu, had presented an ultimatum . . . With which the Zulu king could not possibly comply . . . Bartle Frere then sent Lord Chelmsford to invade Zululand after this ultimatum was not met. The war is notable for several particularly bloody battles, including an opening victory of the Zulu at the Battle of Isandlwana, followed by the defeat of a large Zulu army at Rorke's Drift by a small force of British troops. The war eventually resulted in a British victory and the end of the Zulu nation's dominance of the region." [Wikipedia]