In 1952, the CIA launched Operation PBFortune and, in 1954, Operation PBSuccess to depose the democratically elected Guatemalan President Jacobo Árbenz and ended the Guatemalan Revolution. The coup installed the military dictatorship of Carlos Castillo Armas, the first in a series of U.S.-backed dictators who ruled Guatemala. Guatemala subsequently plunged into a civil war that cost thousands of lives and ended all democratic expression for decades.