 Complete the following phrase:  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 195462. 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 