{{Short description, West African peacekeeping force
ECOWAS mission in Liberia (ECOMIL) was a peacekeeping force sent by the
Economic Community of West African States
The Economic Community of West African States (ECOWAS; also known as CEDEAO in French and Portuguese) is a regional political and economic union of twelve countries of West Africa. Collectively, the present and former members comprise an area ...
(ECOWAS) to
Liberia
Liberia, officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to Liberia–Sierra Leone border, its northwest, Guinea to Guinea–Liberia border, its north, Ivory Coast to Ivory Coast–Lib ...
at the end of
Second Liberian Civil War
The Second Liberian Civil War was a civil war in the West African nation of Liberia that lasted from 1999 to 2003. The war was mainly caused by transition failures after the First Civil War, especially the peace-building process which would res ...
in September 2003.
During the
First Liberian Civil War
The First Liberian Civil War was the first of Second Liberian Civil War, two civil wars within the West African nation of Liberia which lasted between 1989 and 1997. President Samuel Doe's regime of totalitarianism and widespread Political cor ...
in July 1990 ECOWAS adopted the "ECOWAS Peace Plan for Liberia" which ordered the formation of the ECOWAS Monitoring Group in Liberia (ECOMOG). ECOMOG stayed in Liberia until February 1998.
Renewed crisis in Liberia during 2003 led to ECOWAS deploying a second peacekeeping operation in the region, after a Comprehensive Peace Agreement was reached on 18 August 2003. ECOMIL began deploying outside
Monrovia
Monrovia () is the administrative capital city, capital and largest city of Liberia. Founded in 1822, it is located on Cape Mesurado on the Atlantic Ocean, Atlantic coast and as of the 2022 census had 1,761,032 residents, home to 33.5% of Liber ...
from 9 September 2003, with 3 563 troops from
Nigeria
Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea in the Atlantic Ocean to the south. It covers an area of . With Demographics of Nigeria, ...
,
Mali
Mali, officially the Republic of Mali, is a landlocked country in West Africa. It is the List of African countries by area, eighth-largest country in Africa, with an area of over . The country is bordered to the north by Algeria, to the east b ...
and
Senegal
Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated on the Atlantic Ocean coastline. It borders Mauritania to Mauritania–Senegal border, the north, Mali to Mali–Senegal border, the east, Guinea t ...