Otto René Castillo

[1] Active in progressive politics as a high school student, Castillo went into exile in El Salvador in 1954 after the overthrow of Guatemalan President Jacobo Arbenz by a Central Intelligence Agency-orchestrated coup d'etat.

One of the recently arrived Guatemalans, Otto Rene Castillo, quickly captured Dalton's attention and became the group's ideologue.

The early to mid-1960s saw the publication of the only two volumes of work put into print during Castillo's lifetime, Poema Tecún Umán and Vámonos patria a caminar.

In 1966, he clandestinely returned to Guatemala and joined the guerrilla struggle with the Rebel Armed Forces, where he served as the chief of propaganda and education.

[4] After operating in the Sierra de las Minas for several months, he was captured by government forces and taken to Zacapa barracks alongside his comrade, Nora Paíz Cárcamo in March 1967.