Somaliland campaign
The Somaliland campaign, also called the Anglo-Somali War or the Dervish rebellion, was a rebellion in the Horn of Africa, by the Dervish, a Somali movement led by Sayid Muhammed Abdullah Hassan, which continued independently for 21 years between 1899 and 1920. The opening battle of the rebellion saw the Dervish attack the Ethiopian garrison at Jigjiga in March 1900 and take control of parts of the eastern Ogaden region.