The Rif War (1920–1926) deserves to be far better known than it is. When Spanish forces advanced into the Rif Mountains in 1921, Abd el-Krim — a former Spanish-educated qadi (judge) — organised the Riffian tribes into a disciplined fighting force. At Annual on 22 July 1921, his forces killed roughly 12,000 Spanish soldiers and captured or destroyed a vast quantity of artillery and supplies. It was one of the largest military defeats suffered by a European colonial power in the 20th century.
Abd el-Krim then declared the Republic of the Rif — with its own flag, government, and rudimentary constitution — and held it together until Spain and France jointly committed several hundred thousand troops and, controversially, mustard gas dropped from aircraft. Even after his exile in 1926, Abd el-Krim remained an inspiration: Ho Chi Minh, Mao Zedong and later Che Guevara all cited his guerrilla tactics as formative reading.
Today the Rif region around Al Hoceima and Nador is one of Morocco’s least-visited corners by international tourists, which means you get the beaches, mountain roads and villages almost to yourself. A private northern Morocco tour that takes in Tetouan, Chefchaouen, Al Hoceima and Nador covers the whole story in a logical loop from Tangier.