The Ethiopian popular revolution of 1974 ended a monarchy that claimed descent from King Solomon and the Queen of Sheba, and brought to power a military governmentthat created one of the largest and best-equipped armies in Africa. In his panoramic study of the Ethiopian army, Fantahun Ayele draws upon his unprecedented access to Ethiopian Ministry of Defense archives to study the institution that was able to repel the Somali invasion of 1977 and suppress internal uprisings, but collapsed in 1991 under the combined onslaught of armed insurgencies in Eritrea and Tigray. Besides military operations, The Ethiopian Army discusses tactical areas such as training, equipment, intelligence, and logistics, as well as grand strategic choices such as ending the 1953 Ethio-American Mutual Defense Agreement and signing a treaty of military assistance with the Soviet Union. The result sheds considerable light on the military developments that have shaped Ethiopia and the Horn in the twentieth century.