Guerrilla warfare (Spanish: guerrilla "small war") is warfare where one or more sides use unconventional tactics such as stealth, intelligence, sabotage, assassination and espionage, combined with small raids against larger more conventional forces. The Spanish resistance to Napoleon after their nation had been "defeated" is a classic example of guerrilla warfare. Other oft drawn-upon examples of guerrilla warfare are those of the Colonial troops during the Revolutionary War and the Viet Cong resistance during the Vietnam War.
- Maas, Bernard (8 March 2006). What is Guerrilla Marketing? (English). 1% Marketing & Web Design. Retrieved on 10 February 2015. “The name guerrilla marketing was derived from the guerrilla warfare – the unconventional warfare that was once used to describe Warriors of unusual methods and means. In Spanish, the word Guerrilla literally means, war. Guerrilla warfare has got traction from some of the biggest names in the history of mankind. As the famous Argentine Marxist revolutionary Che Guevara had once described, the Guerrilla Warrior fights in order to change the social system that keeps all his unarmed brothers in ignominy and misery”
- Dwyer, Philip G. (22 July 2014). Napoleon and Europe (in English). Routledge. ISBN 9781317882718. Retrieved on 10 February 2015. “In symbiosis with the resistance of British, Portuguese and Spanish regulars, the guerrillas in Spain helped to destroy the French Empire.”