Political map of Sub-Saharan Africa 13 July 1897 (Batetela Rebellion): Intent on securing the southern Sudan, the Congo Free State mounted a two-pronged invasion of the Mahdist State in late 1896. Although the first prong successfully conquered the Lado Enclave in February (Battle of Rejaf), the second, more ambitious, effort to march down the Nile and take Fashoda (Francis Dhanis) collapsed when the native troops involved—mostly Batetela (Tetela people)—revolted and instead seized large parts of the eastern Congo (Second Batetela Rebellion). The rebellion took over two years to suppress, encouraging the Germans in East Africa (German East Africa) to use the crisis as an excuse to seize Congolese territory around Lake Kivu.