On Aba Island on the White Nile, Muhammad Ahmad announced that he was the Mahdi (a guided redeemer figure expected by some Muslims). His claim turned a reform movement into a political and military uprising against Turco-Egyptian rule in Sudan, creating a rallying point for armed resistance.
An Egyptian-led army commanded by William Hicks ("Hicks Pasha") marched into Kordofan to suppress the revolt but was defeated over several days near Shaykan. The loss wiped out a major government field force and convinced many in Sudan that the Mahdists could defeat better-equipped opponents.
Mahdist forces surrounded Khartoum, an important administrative and military center on the Nile. The city was defended by an Egyptian garrison led by British officer Charles George Gordon, and the siege became a major political issue in Britain as calls for a relief expedition grew.
Mahdist forces stormed Khartoum and killed Gordon, ending the siege and collapsing Turco-Egyptian control over most of Sudan. The fall of the city helped the Mahdists establish a state centered at Omdurman and shaped British debates about re-entering Sudan later.
Muhammad Ahmad died only months after Khartoum’s capture, creating a leadership transition at a critical moment. Power passed to Abdallahi ibn Muhammad (the Khalifa), who worked to hold the movement together and govern the Mahdist state while facing internal strains and external threats.
Mahdist forces advanced into southern Egypt but were defeated near Toski by Egyptian troops supported by British leadership and training. The battle reduced the immediate Mahdist threat to Egypt and signaled that the rebuilt Egyptian army could fight effectively against Mahdist field forces.
Anglo-Egyptian forces under Herbert Kitchener defeated a Mahdist force near Ferkeh in northern Sudan. This early success helped secure the Dongola region and marked the start of a sustained campaign up the Nile to dismantle the Mahdist state.
A fast-moving Anglo-Egyptian column seized Abu Hamed, a strategic town on the Nile. Control of Abu Hamed supported plans to build and protect a supply railway across the Nubian Desert, allowing Kitchener’s army to bypass difficult stretches of the river and move faster toward Omdurman.
Kitchener’s forces attacked and defeated a major Mahdist army near the Atbara River. The outcome removed a key obstacle to the final advance on Omdurman and reduced the Khalifa’s ability to defend the Mahdist capital area with large, organized forces.
Near Omdurman, Kitchener’s Anglo-Egyptian army defeated the Khalifa’s forces in a battle shaped by modern firepower, including machine guns and artillery. The victory opened the way to take Khartoum and largely ended the Mahdists’ ability to fight as a conventional army, even though the Khalifa escaped.
After Omdurman, Kitchener met a French expedition at Fashoda (now Kodok), creating a dangerous diplomatic crisis between Britain and France. The confrontation ended without fighting, but it showed how the Sudan campaign was tied to wider competition during the Scramble for Africa.
Britain and Egypt created a joint government for Sudan, often called the Anglo-Egyptian Condominium, with a governor-general holding supreme authority. Although described as shared rule, the structure ensured strong British control and set the political framework that followed the military reconquest.
An Anglo-Egyptian column engaged the remaining Mahdist forces at Umm Diwaykarat in Kordofan, where the Khalifa Abdallahi was killed. The battle marked the final military defeat of the Mahdist state and completed the main phase of the Anglo-Egyptian reconquest (1881–1899) as a start-to-finish conflict arc.
The Mahdist state and the Anglo‑Egyptian reconquest (1881–1899)