The Portuguese Expedition to Abyssinia in 1541–1543

Though the title of the book refers to the event described inside as an expedition, the presence of the Portuguese in Abyssinia (now known as Ethiopia) was actually for the purpose of supporting the empire in the middle of a war called the Abyssinian-Adal War. It was a military conflict between the Christian Ethiopian Empire and the Muslim Adal Sultanate from 1529 to 1543.