Filibuster War
June 16, 1855 – May 1, 1857 · Nicaragua
Result Central American alliance victory
The American adventurer William Walker took control of Nicaragua with a private army and made himself president. Costa Rica and other Central American states joined forces and drove him out.
Nicaragua
Costa Rica
Other
Battles 2
- Battle of Santa Rosa March 20, 1856 · Costa Rican victory
- Second Battle of Rivas April 11, 1856