International Brigades in the context of "Communist International"

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.

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The Monument of Remembrance (French: Monument du souvenir), usually known by the nickname of the Gëlle Fra (Luxembourgish for 'Golden Lady'), is a war memorial in Luxembourg City. It is dedicated to the thousands of Luxembourgers who volunteered for service in the armed forces of the Allied Powers during both World Wars and the Korean War as well as the Luxembourgers who volunteered in the International Brigades during the Spanish Civil War.

Anarchism in France can trace its roots to thinker Pierre-Joseph Proudhon, who grew up during the Restoration and was the first self-described anarchist. French anarchists fought in the Spanish Civil War as volunteers in the International Brigades. According to journalist Brian Doherty, "The number of people who subscribed to the anarchist movement's many publications was in the tens of thousands in France alone."

The Battle of Jarama (6–27 February 1937) was an attempt by General Francisco Franco's Nationalists to dislodge the Republican lines along the river Jarama, just east of Madrid, during the Spanish Civil War. Elite Spanish Legionnaires and Moroccan Regulares from the Army of Africa forced back the Republican Army of the Centre, including the International Brigades, but after days of fierce fighting no breakthrough was achieved. Republican counterattacks along the captured ground likewise failed, resulting in heavy casualties to both sides.

The Battle of Guadalajara (March 8–23, 1937) saw the victory of the Spanish Republican Army (Ejército Popular Republicano, or EPR) and of the International Brigades over the Italian and Nationalist forces attempting to encircle Madrid during the Spanish Civil War. The Nationalist forces involved in the Battle of Guadalajara were primarily the Italian Corps of Volunteer Troops (Corpo Truppe Volontarie, or CTV).

The battle opened with an Italian offensive on 8 March. This offensive was halted by 11 March. Between 12 and 14 March, renewed Italian attacks were supported by Spanish Nationalist units. These were halted too. On 15 March, a counter-offensive of the Republicans was prepared; it was successfully launched between 18 and 23 March. The battle was decided by the superiority of Soviet armoured vehicles over Italian ones; in Britain, the defeat of Italian forces drew mocking comments by former-UK Prime Minister David Lloyd-George, who called it "the Italian skedaddle".

In the military, a political commissar or political officer (or politruk, a portmanteau word from Russian: политический руководитель, romanized: politicheskiy rukovoditel, lit. 'political leader or political instructor') is a supervisory officer responsible for the political education (ideology) and organization of the unit to which they are assigned, with the intention of ensuring political control of the military.

The function first appeared as commissaire politique (political commissioner) or représentant en mission (representative on mission) in the French Revolutionary Army during the French Revolution (1789–1799). Political commissars were heavily used within the International Brigades during the Spanish Civil War (1936–1939). They also existed, with interruptions, in the Soviet Red Army from 1918 to 1991, as well as in the armed forces of Nazi Germany from 1943 to 1945 as Nationalsozialistische Führungsoffiziere (national socialist leadership officers).

Mátyás Rákosi ([ˈraːkoʃi ˈmaːcaːʃ]; born Mátyás Rosenfeld; 9 March 1892 – 5 February 1971) was a Hungarian communist politician who was the de facto leader of Hungary from 1947 to 1956. He served first as General Secretary of the Hungarian Communist Party from 1945 to 1948 and then as General Secretary (later renamed First Secretary) of the Hungarian Working People's Party from 1948 to 1956.

Rákosi had been involved in left-wing politics since his youth, and in 1919 was a leading commissar in the short-lived Hungarian Soviet Republic. After the fall of the Communist government, he escaped the country and worked abroad as an agent of the Comintern. He was arrested in 1924 after attempting to return to Hungary and organize the Communist Party underground, and ultimately spent over fifteen years in prison. He became a cause célèbre in the international Communist movement, and the predominantly Hungarian Rákosi Battalion of the International Brigades in the Spanish Civil War bore his name. Rákosi was finally allowed to leave for the Soviet Union in 1940 in exchange for prized battle flags captured by Tsarist Russian forces after the Hungarian Revolution of 1848.