Spanish Prime Minister. He was a Spanish socialist leader, mainly during the Second Republic, of which he became prime minister soon after the outbreak of the Spanish Civil War, serving from September of 1936 to May of 1937, just prior to the rise of Francisco Franco. After taking power, Largo Caballero concentrated on winning the civil war and did not pursue his policy of social revolution. In an effort to gain the support of foreign governments, he announced that his administration was "not fighting for socialism but for democracy and constitutional rule." As a child, he received little formal education after the age of seven. He had been a stucco laborer, participating in a construction workers strike in 1890. He became political, joining the Spanish Socialist Workers' Party in 1894. He became active in the trade union to the point of being chief lieutenant of the union's head, Pablo Iglesias. Sentenced to life imprisonment for his part in the general strike of August of 1917, he was released in 1918 when another political party began to rule. He became a national hero for his part in the strike, and that ensured him a place in the government. The King of Spain, Alfonso XIII, abdicated in April of 1931. While minister of labor from 1931 to 1933 in the second Spanish Republic of 1931 to 1939, he introduced progressive labor legislation, but his politics moved to the left as he supported a Socialist revolution. After an extreme-left uprising in Barcelona from May 3 to 10, 1937, which was used by the communists to provoke a cabinet crisis, he was forced to resign. After his fall from power, he was politically isolated by the new government of Juan Negrín. In 1939 he went into exile in France. He was arrested by the French Vichy Regime police in 1939, but was later released and placed under house arrest. In June of 1940 he was arrested and interrogated at the age of 72 by the Nazi Gestapo and eventually in July of 1943 interned at Sachsenhausen-Oranienburg Concentration Camp in Germany. Many high-profiled political prisoners, mainly Russians, were interred in this camp. Inmates of the camp were used for force labor under poor conditions. A high percentage of the inmates died daily from the harsh conditions including exhaustion, pneumonia, uncontrolled typhus epidemics and starvation. He spent much of confinement in the camp hospital. In April of 1945 the Polish Infantry of the Red Army liberated the concentration camp, and at that point, he returned the following September to Paris. By January of 1946, his health declined with him having his right kidney removed and his left leg amputated. He died a few months later and was buried in the Cimetière du Père Lachaise. After Franco's death in 1975, his body was moved in 1978 to the Cementerio Civil in Madrid, Spain. A monument by sculptor Pepe Noja of Largo Caballero is located in the New Ministries of Madrid. A commemorative plaque was placed at his Madrid birthplace. He married twice and had a son with his first wife and with his second wife, three daughters and a son.