Abdallahi ibn Muhammad
The Battle of Umm Diwaykarat on November 25, 1899 marked the final defeat of the Mahdist state in Sudan, when Anglo-Egyptian forces under the command of Lord Kitchener defeated what was left of the Mahdist armies under the command of the Abdallahi ibn Muhammad, known as the Khalifa, after the equally disastrous Battle of Omdurman a year earlier.