The East African Campaign (also known as the Abyssinian Campaign) was fought in East Africa during World War II by Allied forces, mainly from the British Empire, against Axis forces, primarily from Italy of Italian East Africa (Africa Orientale Italiana, or AOI), between June 1940 and November 1941. Forces of the British Middle East Command, including units from the United Kingdom and the colonies of British East Africa, British Somaliland, British West Africa, the Indian Empire, Northern Rhodesia, Nyasaland, Mandatory Palestine, South Africa, Southern Rhodesia and Sudan participated in the campaign. Ethiopian irregulars, the Free French and Belgian troops of the Force Publique also participated.
The AOI was defended by Italian forces of the Comando Forze Armate dell'Africa Orientale Italiana (Italian East African Armed Forces Command), with units from the Regio Esercito (Italian army), Regia Aeronautica (air force) and Regia Marina (navy), about 200,000 Regio Corpo Truppe Coloniali from Italian-occupied Abyssinia (Ethiopia), Italian Eritrea and Italian Somaliland, led by Italian officers and NCOs, 70,000 Italian regulars and reservists. The Compagnia Autocarrata Tedesca (German Motorised Company) fought under Italian command.