 Completed 2nd World War, the Communist Party of Spain and others organized a "guerilla" in the hinterland of Spain that had a certain activity in the municipality of Fuencalderas.Some authors suggest that Mariano Navarro from Fuencalderas, that arrived to be lieutenant of the army that kept up loyal to the government during the civil war, was the member of the guerilla "El Tuerto of Fuencalderas".Until 1975, Fuencalderas was an independent municipality.