The Battle of Annual was fought on 22 July 1921 at Annual, in northeastern Morocco, between the Spanish Army and Rifian Berbers during the Rif War. The Spanish suffered a major military defeat, which is almost always referred to by the Spanish as the Disaster of Annual which is widely considered to be the worst defeat suffered by the modern Spanish Army.

Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to the east, and the disputed territory of Western Sahara to the south. Morocco also claims the Spanish exclaves of Ceuta, Melilla and Peñón de Vélez de la Gomera, and several small Spanish-controlled islands off its coast. It has a population of roughly 37 million, the official and predominant religion is Islam, and the official languages are Arabic and Berber; French and the Moroccan dialect of Arabic are also widely spoken. Moroccan identity and culture is a mix of Arab, Berber, African and European cultures. Its capital is Rabat, while its largest city is Casablanca.