Guerrilla warfare
Guerrilla warfare consists of operations conducted by guerrillas, comprising principally raids, ambushes, harassment tactics, demolition, and other destructive activities against enemy forces, supply lines, and installations.[1] These actions are typically executed by comparatively small, independent irregular forces operating in enemy-held or hostile territory, often leveraging indigenous knowledge and mobility to compensate for inferiority in numbers and conventional armament.[2] The approach emphasizes tactical offensives in selected forms, times, and places by strategically weaker parties, avoiding decisive battles while aiming to erode the opponent's will and resources through protracted conflict.[3] Historically, guerrilla tactics have appeared in various forms since ancient times, with notable examples including Germanic tribes' ambush of Roman legions in the Teutoburg Forest in 9 CE and irregular actions during the American Revolutionary War that hindered British advances.[4] In the modern era, the term "guerrilla," derived from Spanish for "little war," gained prominence during the Peninsular War (1808–1814), where Spanish and Portuguese irregulars effectively disrupted Napoleonic supply lines and communications.[2] Key doctrinal developments include Mao Zedong's emphasis on protracted people's war in China, combining rural mobilization with phased escalation from defense to counteroffensive, which contributed to Communist victory in 1949. Successes such as the Viet Cong's application against U.S. forces in Vietnam demonstrated the efficacy of blending combatants with civilians and exploiting terrain for ambushes, though empirical outcomes vary, with guerrilla campaigns succeeding in roughly half of cases due to factors like external aid, terrain suitability, and enemy political resolve rather than tactics alone.[5] Guerrilla warfare's defining characteristics include asymmetry, where irregulars prioritize psychological impact, intelligence gathering, and sabotage over territorial control, often integrating political and propaganda efforts to garner popular support and delegitimize the adversary.[6] Controversies arise from its potential overlap with terrorism, as tactics like assassinations and indiscriminate attacks can blur distinctions between military targets and civilians, complicating legal status under international law and enabling accusations of barbarity from conventional powers.[6] While celebrated in some narratives for enabling underdogs to challenge empires, causal analysis reveals that pure guerrilla strategies rarely achieve outright victory without transition to conventional phases or decisive external intervention, as seen in failures like the Greek Civil War or Malayan Emergency where counterinsurgency measures prevailed. Modern iterations, including in Afghanistan against Soviet and later U.S. forces, underscore the role of sanctuary areas and foreign sponsorship in sustaining operations against technologically superior opponents.[7]