Because they did not gain the support of local people, failure was doomed.

In October 1967, Che Guevara died in La Higra, Bolivia. His vigorous revolutionary life was over, and his traveling war in Bolivia ended in complete failure. Of Che Guevara's many failures in Bolivia, none was worse than convincing locals to join the guerrillas. Peasants in the region do not regard them as fair-skinned, bearded Cubans as saviors to liberate themselves, but are confused by the unprovoked attacks and even killings of Bolivian soldiers and police by these foreigners. He wrote On Guerrilla Warfare, a manual created shortly after the Cuban Revolution in 1960. He wrote in the book: ?It is important to emphasize that guerrilla warfare is a large-scale war and a people's war. The armed atom and the progress of the people. The guerrillas must derive great strength from the people. ?

Three years later, he lowered his thoughts to a solemn warning: ?Any guerrilla war without the support of the people is only a harbinger of disaster. ?However, the Bolivians' military prepared for the confrontation also understood the importance of the local people. Some members of the Bolivian military have received training from U.S. Green Berets. They also obviously studied the manuals they wrote. The Bolivian army knew that without the support of the people, the felled guerrillas would die of hunger and thirst, like plants without water. As a result, the army will not be allowed to survive among the people.

What they want to ensure is that the guerrillas cannot capture the minds of farmers in rural areas, but they can do it themselves, so the guerrillas cannot gain the support of the local people. In June 1967, a magazine acknowledged that the guerrillas were encountering increasing setbacks in their contacts with the local population. The inability to recruit peasants to join the guerrilla government forces resulted in little military action. But their work on the peasants forces us to pay more attention. Whether suppressed by fear or coaxed with words, they could turn everyone in the area. into a person who ventilates them. ?