Horn of Africa Himyarite Kingdom. Under Ezana (fl. 320–360), the kingdom of Aksum became the first major empire to adopt Christianity, and was named by Mani as one of the four great powers of his time, along with Persia, Rome and China. Northern Somalia was an important link in the Horn, connecting the region's commerce with the rest of the ancient world. Somali sailors and merchants were the main suppliers of frankincense, myrrh and spices, all of which were valuable luxuries to the Ancient Egyptians, Phoenicians, Mycenaeans, Babylonians and Romans. The Romans consequently began to refer to the region as "Regio Aromatica". In
Operation Enduring Freedom – Horn of Africa of Galkayo, a Somali army unit conducting counterterrorism operations nearby, when the Somali soldiers came under fire from al-Shabab militants. The Somali soldiers engaged them, then broke contact and rejoined with their nearby American advisers and soon afterwards the militants "began to maneuver in an offensive manner" so the U.S. conducted a self-defense airstrike, killing 4 militants. 26 U.S. servicemen have been killed in non-hostile incidents in Djibouti since the start of operations in the Horn of Africa. Three U.S. soldiers were killed in accidents in Kenya. Two U.S. soldiers were killed in a vehicle accident in Ethiopia. Two U.S.