First Boer War in the open at the Battle of Isandlwana. Shortly after the main battle, a British outpost at Rorke's Drift on the Zululand-Natal border, withstood a second Zulu attack with great losses to the Zulus with the British fighting defensively in and around the stone buildings of a small trading store which had been hastily fortified. After reinforcements arrived, the British won a series of skirmishes and eventually conquered the Zulu capital at Ulundi on 4 July 1879. This war to all intents and purposes signalled the end of the independent Zulu nation. The British consolidated their power over Natal, the
Anglo-Zulu War they left or protected if they remained. In addition, Frere planned to use the meeting on the boundary commission report with the Zulu representatives to also present a surprise ultimatum he had devised that would allow British forces under Lord Chelmsford, which he had previously been instructed to use only in defense against a Zulu invasion of Natal, to instead invade Zululand. Three incidents occurred in late July, August and September which Frere seized upon as his "casus belli" and were the basis for the ultimatum to which Frere knew Cetshwayo could not comply, giving Frere a pretext to attack