Guerrilla warfare is the unconventional warfare and combat in which a small group of combatants use mobile tactics in the form of ambushes and raids to combat a larger and less mobile formal army. The guerrilla army uses ambush and mobility in attacking vulnerable targets in enemy territory. The term means “little war” in Spanish and was created during the Peninsular War. The concept acknowledges a conflict between armed civilians against a powerful nation state army, either foreign or domestic.