Battle of Debre Tabor: Ras Ali Alula, Regent of the Emperor of Ethiopia defeats warlord Wube Haile Maryam of Semien.

The Battle of Debre Tabor was a conflict during the Zemene Mesafint in 1842 initiated by Dejazmach Wube Haile Maryam to overthrow Ras Ali II as Regent of the Emperor of Ethiopia and gain control of Ethiopia. This confused battle was won by Ras Ali, but at a steep price, and this victory failed to cement his position as the most powerful nobleman of his time.