Costa Rica's swift victory at Santa Rosa in 1856 halted the advance of Walker's filibuster forces and protected Central American sovereignty.
Key Facts
- Date of battle
- 20 March 1856
- Duration of battle
- 14 minutes
- Filibuster force size
- ~70 men
- Walker's troops killed
- 59
- Costa Rican casualties
- 20 killed
- Filibuster commander
- Colonel Schlessinger
By the Numbers
Location
Cause → Event → Consequence
William Walker, an American filibuster, had seized power in Nicaragua with ambitions to conquer all five Central American provinces and expand English-speaking slavery states. Costa Rican President Juan Rafael Mora Porras, backed by the British, declared war on 27 February 1856 and marched north with his forces to confront Walker's expanding influence.
On 20 March 1856, a filibuster battalion of roughly 70 men — composed mainly of French and German fighters under Colonel Schlessinger — arrived exhausted at Hacienda Santa Rosa after a long march from Nicaragua. At 4 o'clock, Costa Rican forces armed with rifles, sabres, and bayonets launched a surprise attack, surrounding the unprepared enemy. The entire filibuster force collapsed within fourteen minutes.
Walker's troops suffered 59 killed against 20 Costa Rican dead. The defeat effectively repelled the filibuster advance into Costa Rica and dealt a significant blow to Walker's campaign for Central American conquest. The battle became a defining moment in Costa Rican national identity, commemorated at Santa Rosa's casona, which was later destroyed by fire in 2001 and subsequently rebuilt.
Belligerents & Mobilization Analysis
Side A
1 belligerent
José María Cañas.
Side B
1 belligerent
Colonel Schlessinger.