The National Guard was a militia and a gendarmerie created in 1925 during the occupation of Nicaragua by the United States. It became notorious for human rights abuses and corruption under the regime of the Somoza family (1936–1979). The National Guard was disbanded when the Sandinistas came to power in 1979.

Anastasio Somoza García was the leader of Nicaragua from 1936 until his assassination in 1956. He was officially the 21st President of Nicaragua from 1 January 1937 to 1 May 1947 and from 21 May 1950 until his assassination on 29 September 1956, ruling for the rest of the time as an unelected military dictator. He was the patriarch of the Somoza family, which ruled Nicaragua as a family dictatorship for 42 years.