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He was a veteran of the attack on the Moncada barracks in July 1953 and served time in Batista's New Model Prison on the Isle of Pines with fellow revolutionary Fidel Castro.
Sandy married Terry Cannon, son of prize-winning novelist Josephine Johnson and Grant Cannon editor in chief of the Farm Quarterly, in 1971 after having met in Cuba while both were attending a celebration to commemorate the disastrous July 26, 1953 armed attack on the Moncada Barracks in Cuba by a band of rebels orchestrated by Fidel Castro.
It began with the assault on the Moncada Barracks on July 26, 1953, and ended on January 1, 1959, when Batista was driven from the country and the cities Santa Clara and Santiago de Cuba were seized by rebels, led by Che Guevara and Fidel Castro's surrogates Raúl Castro and Huber Matos, respectively .