The Guinea-Bissau War of Independence (Portuguese: Guerra de Independência da Guiné-Bissau), or the Bissau-Guinean War of Independence, was an armed independence conflict that took place in Portuguese Guinea between 1963 and 1974. Fought between Portugal and the African Party for the Independence of Guinea and Cape Verde, an armed independence movement backed by Cuba, the Soviet Union, and Yugoslavia, the war is commonly referred to as "Portugal's Vietnam" due to the large numbers of men and amounts of material expended in a long, mostly guerrilla war and the internal political turmoil it created in Portugal. The war ended when Portugal, after the Carnation Revolution of 1974, granted independence to Guinea-Bissau, followed by Cape Verde a year later.