The 1976 Argentine coup was a right-wing coup d'état that overthrew Isabel Perón on 24 March 1976, in Argentina. In her place, a military junta was installed, which was headed by General Jorge Rafael Videla, Admiral Emilio Eduardo Massera and Brigadier-General Orlando Ramón Agosti. The junta took the official name of "National Reorganization Process," and remained in power until 1983. While the coup had been planned since October 1975, the United States Department of State learned of the preparations just two months before.