Conflict
|
Combatant 1
|
Combatant 2
|
Results
|
Ochomogo War (1823)
|
Republicans
|
Imperialists
|
Republican victory
|
League War (1835)
|
San José
|
Alajuela
Cartago
Heredia
|
San Jose's victory
|
Filibuster War (1855–1857)
|
Costa Rica
Nicaragua
Kingdom of Mosquitia
Guatemala
Honduras
El Salvador
United States
|
Filibusters
|
Victory
- William Walker's army is defeated and he is arrested by the American Navy
|
Barrios' War of Reunification (1885)
|
El Salvador
Mexico
Costa Rica
Nicaragua
|
Guatemala
Honduras
|
Victory
|
World War I (1918)
|
France
United Kingdom
Russia
United States
Italy
Japan
China
Canada
Australia
New Zealand
India
South Africa
Serbia
Montenegro
Romania
Belgium
Greece
Portugal
Brazil
Cuba
Panama
Guatemala
Nicaragua
Costa Rica
Honduras
|
Germany
Austria-Hungary
Ottoman Empire
Bulgaria
|
Victory
|
Coto War (1921)
|
Costa Rica
|
Panama
|
Victory
- Panama ceded Coto to Costa Rica[1]
|
World War II (1941–1945)
|
United States
Soviet Union
United Kingdom
China
France
Poland
Canada
Australia
New Zealand
India
South Africa
Yugoslavia
Greece
Denmark
Norway
Netherlands
Belgium
Luxembourg
Czechoslovakia
Brazil
Mexico
Panama
Costa Rica
El Salvador
Guatemala
Honduras
Nicaragua
Dominican Republic
Cuba
|
Germany
Japan
Italy
Hungary
Romania
Bulgaria
Croatia
Slovak Republic (1939–1945)
Thailand
Manchukuo
Mengjiang
|
Victory
|
Costa Rican Civil War (1948)
|
Costa Rica
Calderón Forces
People's Vanguard Party
Somoza Forces
|
National Liberation Movement
Ulatistas
|
Regime change
|
Calderonista invasion of Costa Rica (1955)
|
Costa Rica
|
Calderón Forces
Nicaragua
|
Victory
- Nicaraguan withdrawal from Costa Rica
|
Dominican Civil War (1965–1966)
|
Dominican Loyalists
United States
Brazil
Paraguay
Honduras
Nicaragua
Costa Rica
El Salvador
|
Dominican Constitutionalists
|
Victory
|