Timelines
Ethiopia and Somalia at war: a timeline, 1527 to 2026
Ethiopia and Somalia, and the states before them, have fought several times: Adal against the Ethiopian kingdom in 1527–1543; the border war of February–March 1964; the Ogaden war of July 1977 to March 1978; the border fighting from July 1982 until the 1988 withdrawal agreement; and Ethiopia's intervention against the Islamic Courts from December 2006 to January 2009. Ethiopian troops have since served in Somalia in the AU missions. In 2024 the two governments clashed diplomatically over Ethiopia's memorandum with Somaliland, settled by the Ankara Declaration.
In short
This timeline lists the main wars and armed confrontations between Ethiopia and Somalia and the states before them. Each entry gives the main facts and their source, and links to the full page, which sets out where accounts differ. Many of the disputes were over the Somali-inhabited Ogaden region of Ethiopia.
Timeline
- 1527–1543. Adal and Ethiopia. Imam Ahmad ibn Ibrahim al-Ghazi of Adal, based at Harar, with an army largely of Somali communities, fought the Christian kingdom of Ethiopia. He won at Shimbra Kure in March 1529 and held most of Ethiopia by 1540, but was killed at Wayna Daga on 21 February 1543 after Portugal sent 400 musketeers to help Ethiopia (Whiteway, The Portuguese Expedition to Abyssinia in 1541–1543, 1902). Full page: Imam Ahmad ibn Ibrahim and the Adal campaigns, 1527–1543.
- February–March 1964. The border war. Fighting began at Tog Wajaale between Hargeisa and Jigjiga, and Ethiopian aircraft struck targets inside Somalia. Sudan mediated, and talks in Khartoum in March produced a ceasefire and a demilitarised strip on each side of the border (Library of Congress, Somalia: A Country Study). Full page: The 1964 Ethiopian–Somali border war.
- July 1977–March 1978. The Ogaden war. Somali forces and the Western Somali Liberation Front took most of the Ogaden by late 1977. Soviet arms and about 17,000 Cuban troops turned the war, and Somalia announced its withdrawal on 9 March 1978 (Library of Congress, Ethiopia: A Country Study). Full page: The Ogaden war.
- July 1982–April 1988. The 1982 border war. Ethiopian forces, with fighters of the Somali Salvation Democratic Front, crossed into central Somalia and took Balanbale and Galdogob (UPI, 12 July 1982). The two governments agreed in April 1988 to withdraw their forces from the border. Full page: The 1982 Ethiopian–Somali border war.
- December 2006–January 2009. The intervention. Ethiopian forces entered Somalia in support of the transitional government and drove the Islamic Courts out of Mogadishu. Human Rights Watch found that all sides violated the laws of war in the fighting that followed (Human Rights Watch, Shell-Shocked, 2007). Ethiopian troops left Mogadishu on 15 January 2009. Full pages: War in Somalia, 2006 to 2009 and Ethiopia's military in Somalia.
- 2014 onward. Inside the AU missions. Ethiopian troops formally joined AMISOM in January 2014, and others have served outside the AU missions under bilateral arrangements. See Ethiopia's military in Somalia.
- 2024. The Somaliland memorandum. Ethiopia's memorandum of understanding with Somaliland on 1 January 2024 led to a sharp dispute with Somalia and to Somali defence pacts with Turkey and Egypt. Turkish mediation produced the Ankara Declaration on 11 December 2024 (The National, 29 August 2024). See Egypt's military in Somalia and AUSSOM.
Sources differ
Each full page lists where its sources disagree. The largest disputes are over the size of the Ethiopian force in 2006 (from 4,000 to 50,000 or more) and over how many died in each war.
Read the primary sources yourself
Sources
- Whiteway, The Portuguese Expedition to Abyssinia in 1541–1543, 1902 · archive.org
- Library of Congress, Somalia: A Country Study · countrystudies.us
- Library of Congress, Ethiopia: A Country Study · countrystudies.us
- UPI, 12 July 1982 · upi.com
- Human Rights Watch, Shell-Shocked, 2007 · hrw.org
- The National, 29 August 2024 · thenationalnews.com
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Where it happened
- Muqdisho (Mogadishu) and BanaadirMogadishu (Muqdisho) is Somalia's capital and makes up the Banadir region, with about 2.97 million people in 20 districts.
- Dhuusamarreeb (Dhusamareb) and GalgaduudGalgaduud is a region of central Somalia in Galmudug State, with Dhusamareb (Dhuusamarreeb) as its capital and about 845,000 people.
- Beledweyne (Belet Weyne) and HiiraanHiiraan is a region of Hirshabelle State on the Shabelle river, with Beledweyne as its capital and about 505,000 to 598,000 people.
- Garbahaarrey (Garbaharey) and GedoGedo is the south-western region on the borders with Kenya and Ethiopia, with Garbahaarrey as its capital and about 1 million people.
Same era
- Australia18,401 people of Somali ancestry and 8,101 born in Somalia lived in Australia at the 2021 Census, more than half in Victoria. History, work, issues.
- Birmingham (Somali diaspora)About 17,000 to 21,600 Somalis live in Birmingham (Census 2021), mostly in Nechells, Newtown, Small Heath and Alum Rock. History, work, health and ties home.
- Bristol (Somali diaspora)9,167 people in Bristol identified as Somali or Somalilander in Census 2021, the city's largest minority group. Where they live, work, housing, leaders and ties home.
- Calgary, Alberta, Canada2,845 people of Somali origin lived in Calgary at the 2021 Census, plus 890 in Brooks. How they came, who serves them and what they face.
- Denmark (Somali diaspora)21,885 people of Somali origin lived in Denmark in 2026, half born there. Numbers, history, work, permit reviews, and ties home.
- DjiboutiAbout 13,900 refugees from Somalia live in Djibouti (Aug 2026): numbers since 1990, Ali Addeh, Holl-Holl, the 2017 refugee law, Arta 2000 and 2025 returns.
Keep reading
- Deaths in armed conflict in Somalia by year, 1989–2026Reported deaths from armed conflict in Somalia each year from 1989 to 2026, from the Uppsala Conflict Data Program, with what each period covers and the limits of the data.
- History of Somaliland: a timeline from the Stone Age to 2024A dated history of Somaliland from the Stone Age, Zeila and Adal to British rule, the 1960 union, the war of the 1980s, the 1991 declaration and the elections since.
- History of Mogadishu: a timeline from the 1200s to todayA dated history of Mogadishu: the medieval sultanate and mosques, Ibn Battuta, the Portuguese, the Banaadir coast under Zanzibar and Italy, the capital of 1960, and the wars since 1991.
- History of Puntland: a timeline from the sultanates to 2026A dated history of Puntland: the Majeerteen sultanates, the SSDF, the Garowe conferences of 1998, the crisis of 2001–2002, Las Anod, piracy, and its break with Mogadishu in 2024.
- Military history of Somalia: a timeline from Adal to AUSSOMA dated military history of Somalia: Adal, the Dervishes, the army of 1960, the Ogaden war, the civil war, foreign interventions and the war against al-Shabaab.
- Political history of Somalia: a timeline of governments, votes and constitutions, 1943 to 2026A dated political history of Somalia from the Somali Youth Club of 1943 to the constitutional changes of 2024–2026: governments, coups, elections, charters and constitutions.