What is the author's tone in Guerrilla Warfare by Ernesto Guevara?

As was already mentioned, Guerilla Warfare is a work that is short on any kind of literary flare. This work is essentially both a manual for guerilla warfare and a kind of analytical memoir of Che's time as a guerilla. Though the work is not exactly personal, one can gather a lot form the stories that Che tells and the particular points that he seeks to highlight. His tone is to the point and technical. He never dwells, except in the epilogue, on rhetoric of defenses of the revolutionary aims.