Guerrilla warfare

A guerrilla is a civilian who attacks a regular Army. When civilians attack civilians it is usually called terrorism. When two or more armies (representing countries) attack each other this is a war.

Guerrilla warfare is a war tactic when people (Spanish: guerrilleros) using the land and geography as an advantage against an organized army. Guerrilla warfare is sometimes practiced from dense areas such as forests, or jungles. Usually this army is invading a territory.

Guerrilla is a word of Spanish origin. It means "little war".