Spanish Civil War

The Spanish Civil War (Spanish: guerra civil española) was fought from 1936 to 1939 between the Republicans and the Nationalists. Republicans were loyal to the left-leaning Popular Front government of the Second Spanish Republic and included socialists, anarchists, communists, and separatists. The opposing Nationalists who established the Spanish State were an alliance of fascist Falangists, monarchists, conservatives, and traditionalists supported by Nazi Germany and Fascist Italy and led by a military junta among whom General Francisco Franco quickly achieved a preponderant role. Due to the international political climate at the time, the war was variously viewed as class struggle, a religious struggle, or a struggle between dictatorship and republican democracy, between revolution and counterrevolution, or between fascism and communism. The Nationalists won the war, which ended in early 1939, and ruled Spain until Franco's death in November 1975.

The war began after the partial failure of the coup d'état of July 1936 against the Popular Front government by a group of generals of the Spanish Republican Armed Forces. The Nationalist faction consisted of right-wing groups, including Christian traditionalist party CEDA, monarchists, including both the opposing Alfonsists and the religious conservative Carlists, and the Falange Española de las JONS, a fascist political party. However, rebelling units in almost all important cities did not gain control, leaving Spain militarily and politically divided. The rebellion was countered with the help of arming left-wing social movements and parties and formation of militias, what led to rapid socioeconomic and political transformation in the Republican zone, referred to as the Spanish Revolution. The Nationalist forces received munitions, soldiers, and air support from Fascist Italy and Nazi Germany while the Republican side received support from the Soviet Union and Mexico. Other countries, such as the United Kingdom, France, and the United States, continued to recognise the Republican government but followed an official policy of non-intervention. Despite this policy, tens of thousands of citizens from non-interventionist countries directly participated in the conflict, mostly in the pro-Republican International Brigades.

Franco gradually emerged as the primary leader of the Nationalist side, becoming the dictator of the Spanish State by 1937 and co-opting Falangism. The Nationalists advanced from their strongholds in the south and west, capturing most of Spain's northern coastline in 1937. They besieged Madrid and the area to its south and west. After much of Catalonia was captured in 1938 and 1939, and Madrid cut off from Barcelona, the Republican military position became hopeless. On 5 March 1939, in response to allegedly increasing communist dominance of the Republican government and the deteriorating military situation, Colonel Segismundo Casado led a military coup against the Republican government, intending to seek peace with the Nationalists. These peace overtures, however, were rejected by Franco. Following internal conflict between Republican factions in Madrid in the same month, Franco entered the capital and declared victory on 1 April 1939. Hundreds of thousands of those associated with the Republicans fled Spain, mostly to refugee camps in southern France; many of those who stayed were persecuted by the victorious Nationalists.

The war became notable for the passion and political division it inspired worldwide and for the many atrocities that occurred. Organised purges occurred in territory captured by Franco's forces so they could consolidate their future regime. Mass executions also took place in areas controlled by the Republicans, with the participation of local authorities varying from location to location.

In 1868, popular uprisings led to the overthrow of Queen Isabella II. In 1873, Isabella's replacement, King Amadeo I of the House of Savoy, abdicated, and the short-lived First Spanish Republic was proclaimed. The Republic was marred with political instability and conflicts and was quickly overthrown by a coup d'état by General Arsenio Martínez Campos in December 1874, after which the monarchy was restored in the figure of Alfonso XII, Isabella's son.

After the restoration, Carlists and anarchists emerged in opposition to the monarchy. Alejandro Lerroux, Spanish politician and leader of the Radical Republican Party, helped to bring republicanism to the fore in Catalonia. Conscription was a controversial policy that was eventually implemented by the government of Spain. As evidenced by the Tragic Week in 1909, resentment and resistance were factors that continued well into the 20th century.

Spain was neutral in World War I. Following the war, wide swathes of Spanish society, including the armed forces, united in hopes of removing the corrupt central government of the country in Madrid, but these circles were ultimately unsuccessful. Popular perception of communism as a major threat significantly increased during this period.

In 1923, another military coup brought Miguel Primo de Rivera to power. As a result, Spain transitioned to government by military dictatorship. Support for the Rivera regime gradually faded, and he resigned in January 1930. He was replaced by General Dámaso Berenguer, who was in turn himself replaced by Admiral Juan Bautista Aznar-Cabañas; both men continued a policy of rule by decree.