Some engagements in late 20th and early 21st century guerrilla wars involved mounted troops, particularly against partisan or guerrilla fighters in areas with poor transport infrastructure. Such units were not used as cavalry but rather as mounted infantry. Examples occurred in Afghanistan, Portuguese Africa and Rhodesia. The French Army used existing mounted squadrons of Spahis to a limited extent for patrol work during the Algerian War (1954–62). The Swiss Army maintained a mounted dragoon regiment for combat purposes until 1973. The Portuguese Army used horse mounted cavalry with some success in the wars of independence in Angola and Mozambique in the 1960s and 1970s. During the 1964–79 Rhodesian Bush War the Rhodesian Army created an elite mounted infantry unit called Grey's Scouts to fight unconventional actions against the rebel forces of Robert Mugabe and Joshua Nkomo. The horse mounted infantry of the Scouts were effective and reportedly feared by their opponents in the rebel African forces. In the 1978 to present Afghan Civil War period there have been several instances of horse mounted combat.