Republic of Cuba (1902–1959) in the context of Cuban National Army

Cuba, officially the Republic of Cuba, is an island country in the Caribbean. It comprises 4,195 islands, islets and cays, including the eponymous main island and Isla de la Juventud. Situated at the confluence of the Caribbean Sea, Gulf of Mexico, and Atlantic Ocean, Cuba is located east of the Yucatán Peninsula, south of both Florida (the United States) and the Bahamas, west of Hispaniola (Haiti and the Dominican Republic), and north of Jamaica and the Cayman Islands. Havana is the largest city and capital. Cuba is the third-most populous country in the Caribbean after Haiti and the Dominican Republic, with about 10 million inhabitants. It is the largest country in the Caribbean by area. Culturally, Cuba is considered part of Latin America.

Cuba was inhabited as early as the fourth millennium BC, with the Guanahatabey and Taíno peoples present at the time of Spanish colonization in the 15th century. Cuba remained part of the Spanish Empire until the Spanish–American War of 1898, after which it was occupied by the United States and gained independence in 1902. A 1933 coup toppled the democratically elected government of Carlos Manuel de Céspedes y Quesada and began a long period of military influence, particularly by Fulgencio Batista. In 1940, Cuba implemented a new constitution, but mounting political unrest culminated in the 1952 Cuban coup d'état by Batista. His autocratic government was overthrown in January 1959 by the 26th of July Movement during the Cuban Revolution. That revolution established communist rule under the leadership of Fidel Castro. The country under Castro was a point of contention during the Cold War between the Soviet Union and the United States, and the Cuban Missile Crisis of 1962 is widely considered the closest the Cold War came to escalating into nuclear war.

Peter Joachim Gay (né Fröhlich; June 20, 1923 – May 12, 2015) was a German-American historian, educator, and author. He was a Sterling Professor of History at Yale University and former director of the New York Public Library's Center for Scholars and Writers (1997–2003). He received the American Historical Association's (AHA) Award for Scholarly Distinction in 2004. He authored over 25 books, including The Enlightenment: An Interpretation (The Rise of Modern Paganism); Weimar Culture: The Outsider as Insider (1968); and the widely translated Freud: A Life for Our Time (1988).

Gay was born in Berlin in 1923, left Germany in 1939 and emigrated, via Cuba, to the United States in 1941. From 1948 to 1955 he was a political science professor at Columbia University, and then a history professor from 1955 to 1969. He left Columbia in 1969 to join Yale University's History Department as Professor of Comparative and Intellectual European History and was named Sterling Professor of History in 1984.

The 1952 Cuban coup d'état took place in Cuba on March 10, 1952, when the Cuban Constitutional Army, led by Fulgencio Batista, intervened in the election that was scheduled to be held on 1 June 1952, staging a coup d'état and establishing a de facto military dictatorship in the country. The coup has been referred to as the Batistazo in Cuban political jargon.

The island of Cuba was inhabited by various Native American cultures prior to the arrival of the explorer Christopher Columbus in 1492. After his arrival, Spain conquered Cuba and appointed Spanish governors to rule in Havana. The administrators in Cuba were subject to the Viceroy of New Spain and the local authorities in Hispaniola. In 1762–63, Havana was briefly occupied by Britain, before being returned to Spain in exchange for Florida. A series of rebellions between 1868 and 1898, led by General Máximo Gómez, failed to end Spanish rule and claimed the lives of 49,000 Cuban guerrillas and 126,000 Spanish soldiers. However, the Spanish–American War resulted in a Spanish withdrawal from the island in 1898, and following three and a half years of subsequent US military rule, Cuba gained formal independence in 1902.

In the years following its independence, the Cuban republic saw significant economic development, but also political corruption and a succession of despotic leaders, culminating in the overthrow of the dictator Fulgencio Batista by the 26th of July Movement, led by Fidel Castro, during the 1953–1959 Cuban Revolution. The new government aligned with the Soviet Union and embraced communism. In the early 1960s, Castro's regime withstood invasion, faced nuclear Armageddon, and experienced a civil war that included Dominican support for regime opponents. Following the Warsaw Pact invasion of Czechoslovakia (1968), Castro publicly declared Cuba's support. His speech marked the start of Cuba's complete absorption into the Eastern Bloc. During the Cold War, Cuba also supported Soviet policy in Afghanistan, Poland, Angola, Ethiopia, Nicaragua, and El Salvador. The Cuban economy was mostly supported by Soviet subsidies.

The history of Cuba during World War II begins in 1939. Because of Cuba's geographical position at the entrance of the Gulf of Mexico, Havana's role as the principal trading port in the West Indies, and the country's natural resources, Cuba was an important participant in the American Theater of World War II, and it was one of the greatest beneficiaries of the United States' Lend-Lease program. Cuba declared war on the Axis powers in December 1941, making it one of the first Latin American countries to enter the conflict. When the war ended in 1945, the Cuban military had developed a reputation of being the most efficient and co-operative Caribbean nation.