This is a list of wars involving the Republic of Costa Rica.
Conflict Combatant 1 Combatant 2 Results Ochomogo War(1823) Republicans San José Alajuela Imperialists Cartago Heredia Republican victory Zamora's Conspiracy(1826) Costa Rica Royalist conspirators Victory Decisive victory of the Republican government. Execution of José Zamora and defeat of the counter-revolution. League War(1835) San José Alajuela Cartago Heredia Josefine victory San Jose is later made Costa Rica's Capital.Invasion of Guanacaste(1836) Costa Rica Nicaragua Costa Ricans exiled Victory Alajuela Uprising(1842)
Army of the United Towns San José Alajuela Heredia Cartago Protective Allied Army of the Law Cartago Victory of the United Towns Overthrow and execution of Francisco Morazán. Antonio Pinto Soares assumes temporary leadership. Filibuster War(1855–1857)
Allied Central American Army
Legitimist Party Central American alliance victory Battle of La Angostura(1860) Costa Rica Morist Rebels Government victory Defeat of the Morist attempt to regain power. Execution of Juan Rafael Mora Federico Mora's Expedition(1878) Costa Rica Morist Rebel Forces Nicaraguan Deserters Supported by: Government victory Defeat of the rebel incursion in the Atlantic region. Barrios' War of Reunification(1885) Anti-Barrios victory Failure to reunify Central America Death of Justo Rufino Barrios World War I(1918) Allied Powers:
and others... Central Powers: and others... Allied Powers victory Sapoá Revolution(1919) Government of Costa Rica Costa Rican Rebels Nicaraguan Volunteers Government victory Failure of the rebel incursion. The dictatorship falls months later due to internal pressure. Coto War(1921) Victory Panama ceded Coto to Costa Rica Tomán, René De La Pedraja. Wars of Latin America, 1899-1941, p. 100. Jefferson, NC: McFarland &, 2006. World War II(1941–1945) Victory Costa Rican Civil War(1948) Government of Costa Rica Calderon forces People's Vanguard Party Nicaraguan National Guard National Liberation Army Ulatista Forces Caribbean Legion Supported by: Rebel victory Overthrow of president Teodoro Picado Michalski Costa Rican military abolished Calderonista invasion of Costa Rica(1955)
Supported by: Calderón forces
Supported by: Costa Rican government victory Dominican Civil War(1965) Loyalist faction Constitutionalist faction Loyalist victory
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