Battle of Gura

The Battle of Gura was fought on March 7–9, 1876 between the Ethiopian Empire and the Khedivate of Egypt near the town of Gura in Eritrea. It was the decisive battle of the Ethiopian–Egyptian War.
Background.
The Egyptians invaded Ethiopia from their coastal possessions in what is now Eritrea. The armies of Yohannes and Isma'il met at Gundet on the morning of 16 November 1875. After the defeat at Gundet, the Egyptians sent a much larger well-armed force to invade from the north. They moved to Gura plain, and made two forts there: "Gura" fort and "Khaya Khor" fort.
Battle.
After the Egyptians sallied out 5,000 men from Gura fort, they were surrounded and then routed at the hands of the defending Ethiopian force. News of this huge defeat was suppressed in Egypt for fear that it would undermine the government of the Khedivate. The victory helped Emperor Yohannes solidify his control over the Ethiopian Empire broadly, and control over the Mareb Melash specifically. He would appoint "Ras" Alula as the "Ras", in this context "governor" of this region.
Further reading.
"A Confederate Soldier in Egypt - W.W. Loring"