In 1948 , José Figueres Ferrer led an armed uprising in the wake of a disputed presidential election between the previous president Rafael Ángel Calderón Guardia ( he served as president between 1940 and 1944 ) and Otilio Ulate Blanco .
In 1948 , José Figueres Ferrer led an armed uprising between the previous president Rafael Ángel Calderón Guardia ( he served as president between 1940 and 1944 ) and Otilio Ulate Blanco .