Changes

In 1971, the left-wing guerrillas killed 57 policemen, and in 1972 the ERP and Montoneros killed another 38 policemen.<ref>Guerrillas and Generals: The Dirty War in Argentina, Paul H. Lewis, Page 53, Greenwood Publishing Group, 2002</ref> Between March and July 1971 the Argentine newspapers reported 316 armed attacks by the ERP.<ref>Masters of war: Latin America and United States Aggression from the Cuban Revolution through the Clinton Years, Clara Nieto, Page 234, Seven Stories Press, 2011</ref>

In 1971, the left-wing guerrillas killed 57 policemen, and in 1972 the ERP and Montoneros killed another 38 policemen.<ref>Guerrillas and Generals: The Dirty War in Argentina, Paul H. Lewis, Page 53, Greenwood Publishing Group, 2002</ref> Between March and July 1971 the Argentine newspapers reported 316 armed attacks by the ERP.<ref>Masters of war: Latin America and United States Aggression from the Cuban Revolution through the Clinton Years, Clara Nieto, Page 234, Seven Stories Press, 2011</ref>

On January 19, 1974 60–70 ERP guerrillas traveling aboard captured army trucks attacked the 2,000-strong barracks at Azul outside Buenos Aires, killing Corporal Daniel Osvaldo González, the Commanding Officer of the 10th ''Húsares de Pueyrredon'' Armoured Cavalry Regiment (Colonel Camilo Arturo Gay) and his wife (Hilda Irma Casaux). The guerrillas, dressed in captured Argentinian Army uniforms, held the barracks for seven hours.<ref>[https://news.google.com/newspapers?id=ZqhfAAAAIBAJ&sjid=dzIMAAAAIBAJ&pg=3205,4401591&dq= "Argentine Rebels Hold Garrison 7 Hours"]</ref> The guerrillas took the Commanding Officer of the 1st Artillery Regiment, Lieutenant-Colonel Jorge Roberto Ibarzábal hostage in the surprise attack. He would remain in guerrilla hands for 300 days, before 23-year-old university student Sergio Gustavo Dicovsky executed him at a police roadblock on November 19, 1974.   

On January 19, 1974 60–70 ERP guerrillas traveling aboard captured army trucks attacked the 2,000-strong barracks at Azul outside Buenos Aires, killing Corporal Daniel Osvaldo González, the Commanding Officer of the 10th ''Húsares de Pueyrredon'' Armoured Cavalry Regiment (Colonel Camilo Arturo Gay) and his wife (Hilda Irma Casaux).<ref>[https://www.lanacion.com.ar/editoriales/el-olvido-historico-gran-aliado-de-la-violencia-nid1765534 El olvido histórico: gran aliado de la violencia]</ref>

The guerrillas, dressed in captured Argentinian Army uniforms, held the barracks for seven hours.<ref>[https://news.google.com/newspapers?id=ZqhfAAAAIBAJ&sjid=dzIMAAAAIBAJ&pg=3205,4401591&dq= "Argentine Rebels Hold Garrison 7 Hours"]</ref> The guerrillas took the Commanding Officer of the 1st Artillery Regiment, Lieutenant-Colonel Jorge Roberto Ibarzábal hostage in the surprise attack. He would remain in guerrilla hands for 300 days, before 23-year-old university student Sergio Gustavo Dicovsky executed him at a police roadblock on November 19, 1974.   

===Cuban involvement===

===Cuban involvement===