The three battles of Sarbakusa were fought in Ethiopia in May 1771. Wand Bewossen and Fasil of Damot fought three battles with the forces of Emperor Tekle Haymanot II and Ras Mikael Sehul and defeated them. This led to the end of Mikael Sehul's hegemony in Imperial politics and the marginalization of Tekle Haymanot.
References
Three battles of Sarbakusa Wikipedia(Text) CC BY-SA