Eritrean War of Independence
The Eritrean War of Independence (Tigrinya: ውግእ ሰውራ ኤርትራ) was an armed conflict and insurgency aimed at achieving self-determination and independence for Eritrea from Ethiopian rule. Starting in 1961, Eritrean insurgents engaged in guerrilla warfare to liberate Eritrea Province from the rule of the Ethiopian Empire under Haile Selassie and later the Derg under Mengistu Haile Mariam.
Source: Wikipedia — Eritrean War of Independence (CC BY-SA 4.0)