"Guerrilla" refers to a form of irregular warfare in which small groups of combatants use tactics like ambushes, sabotage, and hit-and-run attacks against larger traditional military forces. This strategy is often employed by groups that lack the resources for conventional warfare, allowing them to leverage their knowledge of the local terrain and support from the civilian population. The term "guerrilla" originates from the Spanish word for "little war" and became widely recognized during the Spanish War of Independence in the early 19th century. Guerrilla tactics have been used in various conflicts around the world, including the Vietnam War and the American Revolutionary War, highlighting their effectiveness in asymmetric warfare.