This is the never-before published diary Che Guevara kept during the guerrilla war in Cuba when he joined the struggle to overthrow the Batista dictatorship that led to the 1959 revolution. Che's widow Aleida March has now meticulously transcribed for the first time the small notebooks in which Che recorded his comments on events and individuals, often with a devastatingly brutal frankness. Unpublished for over 50 years, these original notebooks were a key inspiaration for the award-winning movie Che, which starred Benicio Del Toro.