just a few:

Congo 1960-1965
Congo 1968
Zaire 1977
Zaire 1978

Uganda against Amin
Uganda against Obote

Rwanda 1990-1993 RPF Against GOR Until Arusha
Rwanda 1994 Genocide and RPF Military Victory
Rwanda/Zaire 1996-1997--New GOR COIN against former military/militias
Rwanda/Zaire 1997-???? African "World War"


Many more including Congo-Brazzaville, Chad, Sudan, Somalia, Ethiopia, Angola into the 1990s, Burundi

Best

Tom