Career
Born at El Puerto de Santa María in Cádiz, Juan Guilloto worked at a sawmill before joining the Spanish Army. He served in Morocco, becoming a corporal of the Legion. Juan Guilloto was affiliated with the Communist Party of Spain (Professional Certificate of Education) from 1930, and in 1933 he was placed in charge of the Milicias Antifascistas Obreras y Campesinas (MAOC) in Madrid, which constituted a paramilitary force for the Party.
He organized the Sindicato de Oficios Varios y el Socorro Rojo, which coordinated relations with the Socorro Rojo Internacional.
Spanish Civil War
When the Spanish Civil War broke out in July 1936, Juan Guilloto participated in the assault of Cuartel de la Montaña, and the Battle of Guadarrama fought in the Guadarrama Mountain Range. He was one of the leaders of Fifth Regiment, becoming its commander from October 1936 onwards.
He fought in Talavera de la Reina, Santa Olalla and Illescas (September 1936), the defense of Madrid and the Second battle of the Corunna Road, as well as in the Battle of Jarama (February 1937). Juan Guilloto was promoted to lieutenant colonel of the Popular Army and commander of 5th Army Corps, participating in the battles of Belchite, Brunete (July) and Teruel (January 1937 and December 1938).
On 26 August 1938, he was promoted to colonel and became head of the Army of the Ebro.
After the fall of Catalonia to the rebel army, Negrín named Modesto general and head of the Central Army on March 2, 1939. Exile
After Casado"s coup"s, on 6 March Modesto left Spain in an airplane. Then he went to the Soviet Union, whose government recognized his military rank.
During World World War II, he served with the Red Army and the Bulgarian Communist forces.
Defeated in the struggle with José Díaz for control of the Professional Certificate of Education, he went to Prague. Modesto wrote a book about his experience during the war in the 5th Regiment, titled Soy del Quinto Regimento (English:I am of the Fifth Regiment), published in Paris in 1969.
He died in Prague in 1969.