Francisco Javier Arana in the context of Federico Ponce Vaides

Carlos Castillo Armas (locally ['kaɾlos kas'tiʝo 'aɾmas]; 4 November 1914 – 26 July 1957) was a Guatemalan military officer and politician who was the 28th president of Guatemala, serving from 1954 to 1957 after taking power in a coup d'état. A member of the far-right National Liberation Movement (MLN) party, his authoritarian government was closely allied with the United States.

Born to a planter, out of wedlock, Castillo Armas was educated at Guatemala's military academy. A protégé of Colonel Francisco Javier Arana, he joined Arana's forces during the 1944 uprising against President Federico Ponce Vaides. This began the Guatemalan Revolution and the introduction of representative democracy to the country. Castillo Armas joined the General Staff and became director of the military academy. Arana and Castillo Armas opposed the newly elected government of Juan José Arévalo; after Arana's failed 1949 coup, Castillo Armas went into exile in Honduras. Seeking support for another revolt, he came to the attention of the US Central Intelligence Agency (CIA). In 1950 he launched a failed assault on Guatemala City, before escaping back to Honduras. Influenced by lobbying by the United Fruit Company and Cold War fears of communism, in 1952 the US government of President Harry Truman authorized Operation PBFortune, a plot to overthrow Arévalo's successor, President Jacobo Árbenz. Castillo Armas was to lead the coup, but the plan was abandoned before being revived in a new form by US President Dwight D. Eisenhower in 1953.

Presidential elections were held in Guatemala between 17 and 19 December 1944. The October Revolution had overthrown Jorge Ubico, the American-backed dictator, after which a junta composed of Francisco Javier Arana, Jacobo Árbenz and Jorge Toriello took power, and quickly announced presidential elections, as well as elections for a constitutional assembly. The subsequent elections were broadly considered free and fair, although only literate men were given the vote. Unlike in similar historical situations, none of the junta members stood for election. The front-runner was the university professor Juan José Arévalo, nominated by the National Renovation Party. His closest challenger was Adrián Recinos, whose campaign included a number of individuals identified with the Ubico regime. The ballots were tallied on 19 December and Arévalo won in a landslide with 86.25% of the vote, receiving more than four times as many votes as the other candidates combined. The Constitutional Assembly elections took place on 28–30 December, with the United Front of Arevalist Parties winning 50 of the 65 seats.

Jorge Toriello Garrido (23 April 1908 – 16 June 1998) was one of the three leaders of the first government that ruled Guatemala from 20 October 1944 to 15 March 1945 as part of the October Revolution. Toriello Garrido, a civilian, led the government along with Captain Jacobo Arbenz Guzmán and Major Francisco Javier Arana after overthrowing the military regime of Juan Federico Ponce Vaides, who had temporarily taken over from ousted dictator Jorge Ubico. He was the Minister of Finance in 1945.