Which country used guerrilla war fare?

Guerrilla warfare has been employed by various countries throughout history, but one prominent example is Cuba during the Cuban Revolution (1953-1959). Led by Fidel Castro and Che Guevara, the Cuban rebels utilized unconventional tactics against the Batista regime, engaging in ambushes, sabotage, and hit-and-run attacks. This strategy proved effective in undermining the government's authority and ultimately led to the successful overthrow of Batista. Guerrilla warfare has also been used in other contexts, such as in Vietnam and during the American Revolutionary War.