The Cuban communist revolutionary and politician Fidel Castro took part in the Cuban Revolution from 1953 to 1959. Following on from his early life, Castro decided to fight for the overthrow of Fulgencio Batista's military junta by founding a paramilitary organization, "The Movement". In July 1953, they launched a failed attack on the Moncada Barracks, during which many militants were killed and Castro was arrested. Placed on trial, he defended his actions and provided his famous "History Will Absolve Me" speech, before being sentenced to 15 years' imprisonment in the Model Prison on the Isla de Pinos. Renaming his group the "26th of July Movement" (MR-26-7), Castro was pardoned by Batista's government in May 1955, claiming they no longer considered him a political threat while offering to give him a place in the government, but he refused. Restructuring the MR-26-7, he fled to Mexico with his brother Raúl Castro, where he met with Argentine Marxist-Leninist Che Guevara, and together they assembled a small revolutionary force intent on overthrowing Batista.
In November 1956, Castro and 81 revolutionaries sailed from Mexico aboard the Granma, crash-landing near to Los Cayuelos. Attacked by Batista's forces, they fled to the Sierra Maestra mountain range, where the 19 survivors set up an encampment from which they waged guerrilla war against the army. Boosted by new recruits that increased the guerilla army's numbers to 200, they co-ordinated their attacks with the actions of other revolutionaries across Cuba, and Castro became an international celebrity after being interviewed by The New York Times. In 1958, Batista launched a counter-offensive, Operation Verano, but his army's use of conventional warfare was overwhelmed by Castro's guerrilla tactics, and the MR-26-7 eventually pushed out of the Sierra Maestra and took control of most of Oriente and Las Villas. Recognising that he was losing the war, Batista fled to the Dominican Republic while military leader Eulogio Cantillo took control of the country. With revolutionary forces controlling most of Cuba, Castro ordered Cantillo's arrest, before establishing a new government with Manuel Urrutia Lleó as governor and José Miró Cardona as prime minister, ensuring that they enacted laws to erode the power of the Batistanos.